... Title : The Event Related Brain Potential as an Index of Information Processing and Cognitive Activity. A Program of Basic Research. ...

... Title : The Event Related Brain Potential as an Index of Information Processing and Cognitive Activity. A Program of Basic Research. ...

... The Event Related Brain Potential as an Index of Information Processing, Cognitive Activity, and Skill Acquisition: A Program of Basic Research. ...

... The Event Related Brain Potential as an Index of Information Processing, Cognitive Activity, and Skill Acquisition: A Program of Basic Research. ...

... Abstract : In electrophysiology, the Event Related Potential is assumed to be composed of several underlying component wave forms. ...

... Title : Mapping the Event Related Potentials of the Brain: Theoretical Issues, Technical Considerations, and Computer Programs. ...

Event-Related Potentials (ERPs) are changes in an EEG signal that are caused by the neural processing of an event or stimulus.

... kinds of cognition.... Electroencephalogram, Event Related Potentials, Evoked Potentials. Descriptors : *COGNITION, *OSCILLATION ...

We recently demonstrated that the feedback negativity may be better understood as a reward-related positivity that is absent on nonreward trials, and source localization revealed that this reward response may reflect activity in the striatum. In a commentary on our report, Cohen et al. argue against this latter finding, claiming it is unlikely that the striatum contributes to ...

... HIV POSITIVE SUBJECTS ... Event-Related Brain Potential Differences in Attentional Processing in HIV Positive Subjects* Acce:sion For ...

... lltocl b4C9 wm%,, _,___o s GA___ '_ _ ._ . Electroencephalogram Event Related Potentials Evoked Potentials 1I. A"IT ACT ...

... to trigger Event Related Potentials (ERPs) in humans, as well as mental events, this program compares brain recording from cats, reptiles, fish and ...

... Abstract : Principal Component Analysis is a technique that is widely used to extract component wave forms from event related potential (ERP ...

... a multidisciplinary selection of recent papers discussing such topics as event related potentials in development, aging and dementia, color evoked ...

Several studies have shown that schizophrenia is characterized by impaired frontal lobe functions, functions that are responsible, for example, for the management of rules, strategic reasoning, and selective attention. Using event-related potentials (ERP), we assessed the brain's electrical activity in a group of patients with schizophrenia (n=11) and a ...

Event-related potentials (ERPs) are the summed membrane potentials of large numbers of simultaneously active neurons. To determine the anatomical location of the population of cells that produces a specific ERP, one must first record its responses from a ...

This study investigated the use of event-related brain potentials (ERPs) as a neurophysiological measure of eyewitness identification accuracy during a lineup task (ERP-lineup). Time delay between viewing the crime and completing the ERP-lineup (no-delay, 1-h delay and 1-week delay conditions) and culprit presence or absence were also manipulated. Results demonstrated that a ...

The purpose of this experiment was to compare components of the human and rat auditory event-related potential (ERP) in a serial feature-positive discrimination task. Subjects learned to respond to an auditory target stimulus when it followed a visual feature (X [right arrow] A+), but to not respond when it was presented alone (A-). Upon solving the task, ...

Chemosensory event-related potentials hold great promise for furthering understanding of the olfactory system and the processing of olfactory information. ollection of this type of data has been difficult and suggestions are presented to aid investigators new to this field. ugges...

In electrophysiology, the Event Related Potential is assumed to be composed of several underlying component wave forms. Principal Component Analysis is a statistical technique that has been used to uncover the components by analysis of the observed wave f...

This report describes the evaluation of a relatively new technology, the analysis of event related brain potentials (ERPs), as a possible means of improving Navy training. The subjects were 50 Navy recruits undergoing basic military training. Eight channe...

In eight volunteer subjects, the latency of both crest and trough components of visual sensory Event-Related Potentials (ERPs) was found to be increased following 48 hours of total sleep deprivation, relative to baseline levels. The amplitude of the compo...

Principal Component Analysis is a technique that is widely used to extract component wave forms from event related potential (ERP) records. Analysis of simulated ERP records indicate that Principal Component Analysis may produce biased solutions in some c...

To gauge the interaction of real-world sonar-task experience and age on brain electrical activity, the effect of sonar experience and age on event related potentials (ERP) was examined. A three-group design was used and the results suggest that sonar expe...

This study addressed the question as to whether grammatical properties of a first language are transferred to a second language. Dutch-English bilinguals classified Dutch words in white print according to their grammatical gender and colored words (i.e. Dutch common and neuter words, and their English translations) according to their color. Both the classifications were made with the same hand ...

In this study we examined ERP (event-related-potential) responses in the morphosyntactic processing of subject-verb agreements by L2 Chinese learners of English. Fifteen proficient L2 learners and fifteen native English speakers were presented with English sentences that varied in the grammaticality of the sentence with respect to subject-verb agreement. Our results indicate ...

... in the brain is an old problem that is important in evaluating neurological disease, environmental insult, and factors affecting human performance in ...

... Descriptive Note : Conference paper. Corporate Author : PURPLE HOSPITAL TOULOUSE (FRANCE) NEUROLOGY DEPT. ...

The reported investigation shows that nontarget stimuli which are infrequently presented and deviate

... PSYCHOPHYSIOLOGY, CRIMES, CRIMINAL INVESTIGATIONS, THEFT, CUES(STIMULI), GALVANIC SKIN RESPONSE, PSYCHOLINGUISTICS. ...

... Immunodeficiency Virus. Descriptors : *BRAIN, *HUMAN IMMUNODEFICIENCY VIRUSES, *ACQUIRED IMMUNE DEFICIENCY SYNDROME ...

In this study, a linear decomposition technique, independent component analysis (ICA), is applied to

pain. Event-Related Potentials in response to experimental pain were measured in 75 chronic low back Keywords: Event-Related Potentials; Chronic pain; predictive value #12;2 1. Introduction Many experimental and in daily life, in a sample of patients with chronic low back pain. The aim of the study was twofold. ...

An irrelevant auditory probe procedure was employed to evoke brain event-related potentials (ERPs) in 56 Navy recruits while they learned pulsed radar concepts presented to them in study booklets. A mastery test was administered to assess concept acquisit...

... Abstract : We review a program of research designed to understand the event-related brain potential (ERP) so that it can be used as a tool in the ...

... This report describes experiments and developments related to six basic categories of research on the event-related brain potential, performance ...

... Possible evidence for impairment of cognitive function with ... of the potential is known to increase in ... P3 latencies against temperature for all readings ...

This study investigated eyewitness identification using ERPs. Twenty participants completed two eyewitness lineup tasks (standard and deception conditions). For the standard condition, participants tried to accurately identify the culprit, whereas in the deception condition, they were asked to deceptively conceal their recognition of the culprit. Identification rates based on P300 patterns were ...

In order to determine the processing stage that is responsible for the effect of mood states on the breadth of attentional focus, we recorded event-related potentials from 18 students who performed a flanker task involving adjacent letters. To induce a specific mood state, positive, neutral, or negative affective pictures were presented repeatedly during ...

Background: Several models of attention-deficit hyperactivity disorder (ADHD) propose abnormalities in the response to behavioural contingencies. Using event-related potentials (ERPs), the present study investigated the monitoring and subsequent evaluation of performance feedback resulting in either reward or punishment in children with ADHD (N = 18) and ...

Background: Impaired cognitive control has been implicated as an important developmental pathway to attention deficit/hyperactivity disorder (ADHD). Cognitive control is crucial to suppress interference resulting from conflicting information and can be measured by Stroop-like tasks. This study was conducted to gain insight into conflict processing in children with ADHD. Methods: ...

Background:? Several models of attention-deficit hyperactivity disorder (ADHD) propose abnormalities in the response to behavioural contingencies. Using event-related potentials (ERPs), the present study investigated the monitoring and subsequent evaluation of performance feedback resulting in either reward or punishment in children with ADHD (N?=?18) and ...

... of several that we tested (including peak amplitude, peak latency, and root ... the voltage in the average ERP waveform over a period extending from ...

... electroencephalogram/event-related potential system, a pupilometer/eye- tracking system, and a repetitive transcranial magnetic stimulation system. ...

-347. Kutas, Marta, & Van Petten, Cyma K. (1994). Psycholinguistics electrified: Event-related brain potential

... to determine if the P300 component of the event related brain potential (ERP ... of the P300 reflects the amount of updating of working memory that is ...

... after the onset of an eliciting stimulus. The P300 was examined for any effects on its amplitude having to do with the truthfulness of the stimuli. ...

... NEUROLOGICAL DIFFERENCES IN HIV PATIENTS ... Summary Thirteen asymptomatic HIV-infected and 13 healthy control subjects underwent ...

... of Defense (Army Office) Campbell Park Offices ... Director Manpower Research and Advisory Services 1 Dr. Alan Baddeley Smithsonian Institution ...

... Personal Author(s) : Hoffman, James E. ; Simons, Robert F ... and highly dependent on processing load. ... the high speed search process resulting from ...

... able changes in the alpha and beta bands have also been reported: in some of ... level noise bursts as a simulation of a passive sonar detection task. ...

... The researchers assumed that the six written cognitive style tests really did measure ... R. L., Miller, H., & Tripodi, T. Clinical and social judgmer,,: The ...

BETWEEN SPOKEN WORDS AND ENVIRONMENTAL SOUNDS: EVENT-RELATED BRAIN POTENTIAL MEASURES CYMA VAN PETTEN

Apr 21, 2011 ... Indices of electroencephalogram (EEG), event related brain potentials (ERP), reaction time, and errors will be measured in a spatial ...

E "Event-Related" Potentials during Attention and Perception ..... comes localized to occipital cortex and then finally disappears, this habituation ..... reticular neurons and the hippocampus and frontal lobe which have been impli- ...

Human Evoked Potentials presents a multidisciplinary selection of recent papers discussing such topics as event related potentials in development, aging and dementia, color evoked potentials, and spatial and temporal distribution of olfactory evoked poten...

Detection and identification of objects are the most crucial goals of visual perception. We studied the role of luminance and chromatic information for object processing by comparing performance of familiar, meaningful object contours with those of novel, non-object contours. Comparisons were made between full-color and reduced-color object (or non-object) contours. Full-color stimuli contained ...

Can conscious processing be inferred from neurophysiological measurements? Some models stipulate that the active maintenance of perceptual representations across time requires consciousness. Capitalizing on this assumption, we designed an auditory paradigm that evaluates cerebral responses to violations of temporal regularities that are either local in time or global across several seconds. Local ...

Native tone language experience has been linked with alterations in the production and perception of pitch in language, as well as with the brain response to linguistic and non-linguistic tones. Here we use two experiments to address whether these changes apply to the discrimination of simple pitch changes and pitch intervals. Event related ...

Although dental phobia afflicts men and women, gender differences in neural correlates of this disorder have not been investigated thus far. We recorded event-related potential (ERPs) in 30 individuals with dental phobia (15 women, 15 men with comparable disorder severity) and 30 nonphobic controls (15 women, 15 men) while they passively viewed pictures ...

The present event-related potentials (ERP) study investigated the mechanisms by which cognitive load reduces the negative priming (NP) effect in a letter flanker task. On each trial, participants (N=20) first encoded a set of one to five digits, then responded to two successive flanker displays (prime, probe), and finally recalled a certain digit from the ...

Deviances in early event-related potential (ERP) components reflecting auditory and phonological processing are well-documented in children at familial risk for dyslexia. However, little is known about brain responses which index processing in other linguistic domains such as lexicon, semantics and syntax in this group. The present study investigated ...

The present event-related potential (ERP) study aimed at investigating the specific behavioral and electrophysiological correlates of target competition, and their relationships to individual differences in functional impulsivity. Twenty-two participants performed a modified XO task with two conditions. Target competition displays included one up to three ...

It has been intensely debated whether visual stimuli are processed to the point of semantic analysis in the absence of awareness. In the present study, we measured the extent to which the meaning of a stimulus was registered using the N400 component of human event-related potentials (ERPs), a highly sensitive index of the semantic mismatch between a ...

Native tone language experience has been linked with alterations in the production and perception of pitch in language, as well as with the brain response to linguistic and non-linguistic tones. Here we use two experiments to address whether these changes apply to the discrimination of simple pitch changes and pitch intervals. Event related ...

We studied the neuronal mechanisms that implement acoustic short-term memory (ASTM) for pitch using event-related potentials (ERP). Experiment 1 isolated an ERP component, the sustained anterior negativity (SAN), that increased in amplitude with increasing memory load in ASTM using stimuli with equal duration at all memory loads. The SAN load effect found ...

The purpose of this study was to determine the repercussions of left temporal lobe epilepsy (TLE) for subjects with left mesial temporal sclerosis (LMTS) in relation to the behavioral test-Dichotic Digits Test (DDT), event-related potential (P300), and to compare the two temporal lobes in terms of P300 latency and amplitude. We studied 12 subjects with ...

Decline in episodic memory is a common feature of healthy aging. Event-related potential (ERP) studies in young adults have consistently reported several modulations thought to index memory retrieval processes, but relatively limited work has explored the impact of aging on them. Further, work with functional imaging has demonstrated differential neural ...

Contents: The Event-Related Brain Potential as an Index of Attention Allocation in Complex Displays; Event-Related rain Potentials and Subjective Probability in a Learning Task; and A Metric for Thought: A Comparison of P300 Latency and Reaction Time.

Research Report Auditory event-related potentials differ in dyslexics even when auditory because not all dyslexic individuals show psychophysical deficits on auditory processing tasks; hence behavioral psychophysical tasks include both bottom-up processing and top-down strategies, dyslexics

Somatosensory evoked event-related potentials in an oddball paradigm were recorded on four divers of the HYDRA IX experiment during the compression phase. Only a few of the measurements were able to be analyzed. Nonetheless, it appears that the early wave...

In this study, event-related brain potentials (ERPs) are used to investigate the processing of musical scale structures from a cross-cultural perspective. ERP reactions reveal that universal listening strategies per se are modified by culture. PMID:14681138

processing while viewing complex scenes. We used an electrophysiological technique with macaque monkeys analogous to procedures for recording scalp event-related potentials from humans and found that monkeys the deployment of visual attention in the brains of humans and nonhuman primates. macaque monkey visual search

presented within foveal vision is modulated by spatial attention, event- related potentials (ERPs) were reserved. Keywords: Emotional expression; Event-related potentials; Fearful faces; Foveal vision; Spatial the processing of emotional faces when these faces are presented centrally within ...

Event-related potentials were elicited when a digitized word representing a pilot's call-sign was presented. This auditory probe was presented during 27 workload conditions in a 3x3x3 design where the following variables were manipulated: short-term load,...

and Van Petten, Cyma. 1992. "An Event-Related Potential (ERP) analysis of semantic congruity and Van Petten, Cyma. 1994. "Psycholinguistics Electrified: Event- related potential investigations". In M by syntactic anomaly". Journal of Memory and Language, 31: 785- 806. Van Petten, Cyma and ...

-deficit/hyperactivity disorder (ADHD). Methods: Event-related potentials were measured in 10 children with ADHD and 10 healthy inferior frontal cortex, which was markedly reduced in ADHD children. The N200 amplitude was significantly correlated across subjects with response� inhibition performance. In response to the Go stimuli, ADHD

Human event-related potentials (ERPs) were recorded from 10 subjects presented with visual target and nontarget stimuli at five screen locations and responding to targets presented at one of the locations. The late positive response complexes of 25-75 ERP...

Event-related potentials elicited during a context-free homograph task in normal versus homographs with dominant and subordinate meanings. Their sentence ending presented information crucial for interpretation ~e.g., The bank was [closed, steep]!. Greatest N400 activity to subordinate homograph

Event-related potentials (ERPs) were recorded from infants shown sets of familiar faces presented frequently and infrequently, and a set of novel faces presented infrequently, and correlated with infant emotional behavior and cortisol levels. Found that infants scoring higher on the normative ERP factor were more distressed during parent separation and had ...

Differences in response of four- to seven-month-old infants to tachistoscopically presented photographs of two human faces suggest infants were able to remember a frequently presented face from trial to trial and discriminate it from a discrepant, infrequently presented face. Findings suggest event-related brain potential (ERP) responses could provide a ...

A cross-validation procedure was applied to a prediction equation. The equation was developed in order to aid in the identification of high level sonar operators. Endogenous event-related potentials (ERPs) were used as predictors and a performance score o...

Effects of breast milk and milk formula supplemented with docosahexaenoic acid and arachidonic acid on speech processing were investigated by recording event-related potentials (ERPs) to synthesized /pa/ and /ba/ (oddball paradigm, 80%:20%) at 3 and 6 months of age. Behavioral assessment was also ob...

This experiment examined the topographical pattern of event related potentials (ERPs) in three separate tasks whose solution primarily engaged different components of human information processing capabilities. The tasks were stimulus degradation, linguist...

This report describes experiments and developments related to six basic categories of research on the event-related brain potential, performance, and cognition: (1) Tracking, attention, and workload; (2) automation, skill learning, memory, and the 'depth'...

Data reporting correlated changes, due to learning, in the amplitudes and chronometry of several event-related potentials (ERPs) are compared to neural explanations and predictions of the adaptive resonance theory. The ERP components processing negativity...

Alternative methods of selecting features of visual evoked potentials for automatic pattern classification are compared. Forward sequential feature selection with linear and quadratic discriminant functions, step-wise linear discriminant analysis and exha...

... We propose a new modelling approach based on a ... set to 0.33 Sm-1, and skull conductivity to 4.2 ... from equations (3) and (4), replacing potentials by ...

In two experiments ERP's and slow potential changes have been recorded from normal subjects performing a visual tracking task in which the level of difficulty was systematically varied. In the second experiment a secondary discrimination task was added to...

In this chapter, we review studies of event-related brain potentials(ERPs) that address, either explicitly or implicitly the phenomena of consciousness. An analysis of the methodology and findings of these studies leads to an examination of their conceptu...

PEARL II, a computerized battery of electrophysiological tests designed for neurotoxicity field testing, was developed a decade ago. The battery includes sensory evoked potentials (auditory, somatosensory and visual), event-related slow brain potentials (...

Average event-related potential (ERP) data recorded from the human scalp reveal electro-encephalo- graphic (EEG) activity that is reliable time- locked and phase-locked to experimental events. We report here the application of a method based on informatio...

The subject of this case report is an 18-year-old woman with grossly abnormal auditory brain stem response (ABR), normal peripheral hearing, and specific behavioral auditory processing deficits. Auditory middle latency responses (MLRs) and cortical potentials N1, P2, and P300 were intact. The mismatch negativity (MMN) was normal in response to certain synthesized speech ...

In humans, face configuration, contour and color may affect face perception, which is important for social interactions. This study aimed to determine the effect of color information on face perception by measuring event-related potentials (ERPs) during the presentation of natural- and bluish-colored faces. Our results demonstrated that the amplitude of ...

Research reported here concerns neural processes relating to stimulus equivalence class formation. In Experiment 1, two types of word pairs were presented successively to normally capable adults. In one type, the words had related usage in English (e.g., uncle, aunt). In the other, the two words were not typically related in their usage (e.g., wrist, corn). For pairs of both types, ...

Research reported here concerns neural processes relating to stimulus equivalence class formation. In Experiment 1, two types of word pairs were presented successively to normally capable adults. In one type, the words had related usage in English (e.g., uncle, aunt). In the other, the two words were not typically related in their usage (e.g., wrist, corn). For pairs of both types, ...

... At each of three electrode sites (Fz, Cz, and Pz), peak amplitude, peak latency, and root mean square amplitude (RMS), of the P300 were computed ...

... At each of three electrode sites (Fz, Cz, Pz), peak amplitude, peak latency, and root-mean-square amplitude (RMS0, of the P300 were computed for ...

This report describes the application of a relatively new technology, the visual event related brain potential (VERP) method of brain wave analysis, as a possible means of improving the prediction of performance of sonar operators. The subjects, 26 traine...

Event-related brain potentials (ERPs) were elicited by words in a free recall paradigm that included a novel item. The P300 component of the ERP is elicited by novel, task-relevant events, and we tested the hypothesis that P300 is manifestation of the cog...

There is increasing evidence in the form of language-relevant sensory processing and discrimination that the foundations for speech perception are present at birth and are subject to significant modification during the first year of life. However, charting the course of early language development is...

The goal of this research project was twofold. Task number 1: Assemble a multimodal human performance laboratory that includes a complex human motor assessment system, 128 channel electroencephalogram/event-related potential system, a pupilometer/eye-trac...

... CALIF. Personal Author(s) : Callaway,E. ; Halliday,R. ; Naylor,H. Report Date : NOV 1983. Pagination or Media Count : 6. ...

A spherical head model based on a resistor mesh is presented. Each resistor corresponds to the conducting electrical properties of a tissue volume. A current dipole is simulated by an electrical current source connected between two nodes in this mesh. The...

The major emphasis of the research was to assess the utility of employing event-related potentials in monitor type tasks. The 'work manipulation' paradigm was employed. Auditory probes were presented along a secondary channel unrelated to the perceptual-m...

The primary thrust of the neuroscience research program at the Navy Personnel Research and Development Center (NPRDC) is to develop a technology for measuring evoked brain activity (event-related brain potentials, ERPS) that correlates with the performanc...

alcoholic subjects with a lifetime diagnosis of depression, the flattened amplitude profile was due! consisted of alcoholics with comorbid major depression but with- out antisocial personality disorder of responses that differentiated depressed alcoholics from the control group. The flattened amplitude profile

This was an exploratory study designed to assess the effect of self-referent stimuli on the P300 component of the electroencephalogram (EEG). The stimuli were self-referent phrases. Self-referent phrases are phrases that are personally descriptive, and ar...

The results of the first of four sessions of a year-long longitudinal study of alcoholics are reported. The ERPs of two groups (11 alcoholics and 11 nonalcoholics) of subjects were recorded in order to evaluate their utility as objective indicators of cog...

One of the problems encountered in studies of glue sniffing, and other types of solvent poisoning is addiction. This problem also afflicts researchers who tend to become addicted to a particular methodology. This paper will review some alternatives to the...

Event-related potential (ERP) component parameters were used as dependent measures in an evaluation of the functional aspects of cognition in acute alcoholics. Previous studies indicate that chronic alcoholics differ in unique ways from nonalcoholics. How...

One of the problems encountered in studies of glue sniffing, and other types of solvent poisoning is addiction. This problem also afflicts researchers who tend to become addicted to a particular methodology. This paper will review some alternatives to the behavioral methods to wh...

The overall purpose of this project is to assess the stability and reliability of such biotechnology predictors as brain event-related potentials (ERPs) in order to use them as performance predictors and assessors against baseline conditions. Comparisons ...

The objective of this effort was to determine whether biomagnetic recordings may prove effective in predicting personnel performance. Two experiments were conducted. In the first, bioelectric data (e.g., event-related brain potentials) and sample biomagne...

Accurate measurement of single-trial responses is key to a definitive use of complex electromagnetic

An overview of language processing during reading and listening is provided. Evidence is reviewed indicating that language processing in both domains is fast and incremental. We also discuss some aspects of normal reading and listening that are often obscured in event related potential (ERP) research. We also discuss some apparent ...

Dutch-English bilinguals performed a generalized lexical decision task on triplets of items, responding with "yes" if all items wee correct Dutch and/or English words, and with "no" if one or ore of the items was not a word in wither language. Semantic priming effects were found in on-line response times. Event-related potentials that were recorded ...

ObjectiveWe hypothesized that an ERP word repetition paradigm, which reliably elicits and modulates the P600 and N400 components, would be particularly sensitive to the memory deficits and altered synaptic plasticity in mild Alzheimer�s disease (AD). The P600 (a late positive component, or �LPC�), and the N400, are sensitive indices of memory encoding and semantic processing, ...

A non-invasive technique for quantification of argon laser induced burning second pain (C-fibre) is suggested. Using frequency analysis event related responses to burning pain can be detected in the EEG interval 1-2 seconds after laser stimulation. When the laser stimulus induced a burning pain perception, the power from 0.5-2.5 Hz of the EEG interval 1-2 ...

Argon laser induced event related responses to pricking pain (first pain) were recorded. The different recording parameters (recording site, filter setting, averaging technique), quantification parameters (amplitude, power) and variability between successive recordings were studied. The single responses were large, and averaging of 16-32 single trials was ...

Argon laser induced event related responses to pricking pain (first pain) were recorded. The different recording parameters (recording site, filter setting, averaging technique), quantification parameters (amplitude, power) and variability between successive recordings were studied. The single responses were large, and averaging of 16-32 single trials was ...

Primary progressive aphasia (PPA), a selective neurodegeneration of the language network, frequently causes object naming impairments. We examined the N400 event-related potential (ERP) to explore interactions between object recognition and word processing in 20 PPA patients and 15 controls. Participants viewed photographs of objects, each followed by a ...

The visual half-field procedure was used to examine hemispheric asymmetries in meaning selection. Event-related potentials were recorded as participants decided if a lateralized ambiguous or unambiguous prime was related in meaning to a centrally-presented target. Prime-target pairs were preceded by a related or unrelated centrally-presented context word. ...

Visual event-related potentials (ERPs) produced by a stimulus are thought to reflect either an increase of synchronized activity or a phase realignment of ongoing oscillatory activity, with both mechanisms sharing the assumption that ERPs are independent of the current state of the brain at the time of stimulation. In natural viewing, however, visual ...

Both invasive and non-invasive electroencephalographic (EEG) recordings from the human brain have an increasingly important role in neuroscience research and are candidate modalities for medical brain-machine interfacing. It is often assumed that the major artifacts that compromise non-invasive EEG, such as caused by blinks and eye movement, are absent in invasive EEG ...

Deteriorated phonological representations are widely assumed to be the underlying cause of reading difficulties in developmental dyslexia; however, existing evidence also implicates degraded orthographic processing. Here, we used event-related potentials whilst dyslexic and control adults performed a pseudoword-word priming task requiring deep phonological ...

Auditory event-related potentials (mismatch negativity and P300) and behavioral discrimination were measured to synthetically generated consonant-vowel (CV) speech and nonspeech contrasts in 10 young adults with normal auditory systems. Previous research has demonstrated that behavioral and P300 responses reflect a phonetic, categorical level of ...

In order to explore neural activity that accompanies cognitive bias in mood disorders, clinically depressed and non-depressed controls completed a self-evaluation procedure in which they indicated whether trait words were self-descriptive or not. Dense array (256-channel) electroencephalography (EEG) was recorded. Greater depression and low Positive Affect were associated with decreased ...

Primary progressive aphasia (PPA), a selective neurodegeneration of the language network, frequently causes object naming impairments. We examined the N400 event-related potential (ERP) to explore interactions between object recognition and word processing in 20 PPA patients and 15 controls. Participants viewed photographs of objects, each followed by a ...

The aim of the study was to examine central auditory processes compromised by age, age-related hearing loss, and the presentation of a distracting cafeteria noise using auditory event-related potentials (ERPs). In addition, the relation of ERPs to behavioral measures of discrimination was investigated. Three groups of subjects participated: young normal ...

In dynamic cluttered environments, audition and vision may benefit from each other in determining what deserves further attention and what does not. We investigated the underlying neural mechanisms responsible for attentional guidance by audiovisual stimuli in such an environment. Event-related potentials (ERPs) were measured during visual search through ...

Behavioral studies have shown that matching individual faces across depth rotation is easier and faster for familiar than unfamiliar faces. Here we used event-related potentials (ERPs) to clarify the locus of this behavioral facilitation, that is whether it reflects changes at the level of perceptual face encoding, or rather at later stages of processing. ...

In a patient with an ischemic lesion of the right paramedian region of the pons, somatosensory evoked potential (SEP) recording to median nerve stimulation showed an absent P14 response with still preserved P13 and N18 potentials. The tibial nerve P30 and N33 SEP components were normal. Our results suggest that the median nerve P14 ...

Event-related brain potentials were used to examine the neural correlates of the visual illusion effect in the Poggendorff illusion. In this study, there were three tasks, namely, illusion task 1, illusion task 2 (similar to the classical Poggendorff figures, where the two oblique lines in which individuals were prone to judge to be collinear, were not ...

may be drilled to greater depths, but they are restricted to areas with potential for oil and gas production. Absent empirical drilling data, the only method available for...

Event-related potentials (ERPs) are important clinical and research instruments in neuropsychiatry, particularly due to their strategic role for the investigation of brain function. These techniques are often underutilized in the evaluation of neurological and psychiatric disorders, but ERPs are noninvasive instruments that directly reflect cortical ...

In this study, we report gustatory event-related potentials in response to stimulation with monosodium glutamate (MSG) and salt (NaCl). We investigated differences in event-related potential related to stimulus quality, stimulus concentration, cortical topography, and participants' sex. Our results showed that amplitudes P1N1 and N1P2 ...

To learn a new language, it is necessary for the learner to succeed in segmenting the continuous stream of sounds into significant units. Previous behavioral studies have shown that it is possible to segment a language or musical stream based only on probabilities of occurrence between adjacent syllables/tones. Here we used a sung language and tested participants' learning of both linguistic and ...

EEG signals are important to capture brain disorders. They are useful for analyzing the cognitive activity of the brain and diagnosing types of seizure and potential mental health problems. The Event Related Potential can be measured through the EEG signal. However, it is always difficult to interpret due to its ...

To investigate the neural correlates of artificial grammar learning, we recorded the electroencephalogram while experimental participants listened to phonological sequences. We compared event-related potential responses to expectancy violations in two participant conditions; training and a no-training control group. During the test phase, participants in ...

The present study seeks to identify effects of a common genetic polymorphism in the human nicotinic alpha4beta2 receptor on components of the cognitive event-related potentials in auditory and visual modalities. The same sense thymine-to-cytosine polymorphism (c.1629T-C; Ser543Ser) was shown to preferentially modulate early components in both modalities. ...

We investigated the existence of a cross-modal sensory gating reflected by the modulation of an early electrophysiological index, the P50 component. We analyzed event-related brain potentials elicited by audiovisual speech stimuli manipulated along two dimensions: congruency and discriminability. The results showed that the P50 was attenuated when visual ...

The concept of categorical perception of speech and speech-like sounds has been central to models of speech perception for decades. Event-related potentials (ERPs) provide a neurophysiologic perspective of this important phenomenon. In the present experiment the mismatch negativity (MMN) event-related potential, ...

effects on auditory and Zvisual ERPs Goodin et al., 1978; Polich and Starr, 1984; Dustman et al., 1990., 1978. Age-related variations in evoked potentials to auditory stimuli in normal human subjects. Chemosensory event-related potentials in man: Relation to olfactory and painful sensations elicited by nicotine

Event-related brain potentials (ERP) are important neural correlates of cognitive processes. In the domain of language processing, the N400 and P600 reflect lexical-semantic integration and syntactic processing problems, respectively. We suggest an interpretation of these markers in terms of dynamical system theory ...

Assessed development of auditory selective attention using event-related brain potentials (ERPs) and behavioral measures. Subjects heard tones or consonant-vowel sequences to detect deviant targets. Found that Nd difference (ERP difference between unattended and attended standard) showed effect of selective attention. For both tones and consonant-vowels, ...

Reviews recent neuroradiologic and brain imaging techniques in the assessment of learning disability. Technologies reviewed include computerized tomography; magnetic resonance imaging; electrophysiological and metabolic imaging; computerized electroencepholographic studies of evoked potentials, event-related potentials, spectral ...

Children from socioeconomically disadvantaged families are at risk for malnutrition, learning disabilities, and many other problems associated with poverty. Increasing application of event-related potentials (ERP) methods has been made in studies of aberr...

Slow cortical potentials were studied in young children with blood lead (PbB) levels ranging from 6 to 52 g/dl. Slow wave (SW) voltage recorded from the scalp during sensory conditioning varied as a linear function of PbB level and age. Evidence of a pers...

Slow cortical potentials were studied in young children with blood lead (PbB) levels ranging from 6 to 52 g/dl. Slow wave (SW) voltage recorded from the scalp during sensory conditioning varied as a linear function of PbB level and age. Evidence of a persistent alteration of brai...

Pearl II, a computerized battery of electrophysiological tests designed for neurotoxicity field testing, was developed a decade ago. he battery includes sensory evoked potentials (auditory, somatosensory and visual), event related slow brain potentials (CNV,P30O), and associated ...

Studies showing that infants can differentially process and discriminate speech stimuli have not considered the influence of diet as an experimental variable. To investigate this relationship, cortical auditory evoked potentials (ERPs) to syllables were recorded (128 electrodes) from 3 month old inf...

Four questions were addressed by the present research: They related to the effects of: a) 48-hours of sleep deprivation on endogenous event related potentials (ERPs); b) circadian rhythms on ERP recordings; c) different durations of recovery sleep (1,2,4 ...

Recent studies have demonstrated that comparisons of scalp topographical distributions of event-related potentials (ERPs) between experiment conditions may not correctly indicate underlying changes in neural sources if the signals are not scaled prior to the comparisons. This important issue was re-...