Cells within the medial superior olivary nuclei (accessory nuclei) of cat receive afferents from each cochlear nucleus and project homolaterally by way of the nucleus of the lateral lemniscus to the nucleus of the inferior colliculus. Because of this anat...

Atoh1 is a basic helix-loop-helix transcription factor necessary for the specification of inner ear hair cells and central auditory system neurons derived from the rhombic lip. We used the Cre-loxP system and two Cre-driver lines (Egr2^Cre and Hoxb1^Cre) to delete Atoh1 from different regions of the cochlear nucleus (CN) and ...

... of accessory units are presented and discussed. Descriptors : *Hearing, *Auditory nerve, Psychophysiology, Electrophysiology, Nerves, Senses ...

... NOISE(SOUND), WARNING SYSTEMS, AUDITORY PERCEPTION, COCHLEA, AUDITORY NERVE, NUCLEI(BIOLOGY), CATS, BEHAVIOR ...

... be carried out in the cochlear nucleus to establish ... Descriptors : *NUCLEI( BIOLOGY), *AUDITORY PERCEPTION, *INFORMATION PROCESSING ...

Apr 21, 2011 ... Tyrosine hydroxylase, accessory optic system, quail. Immunohistochemistry, microscopy ... Tyrosine hydroxylase, vestibular nuclei, quail ...

During sensory interaction, an accessory stimulus in a second modality can have a facilitating or inhibiting effect upon some measureable response to a stimulus applied to a primary modality. This study examined whether increased intensity of an accessory...

Apr 21, 2011 ... Tyrosine hydroxylase, accessory optic system, quail. Immunohistochemistry, microscopy ... Tyrosine hydroxylase, vestibular nuclei, quail ...

Cortical EEG activity was recorded from six chronically implanted cats when auditory click stimuli were presented before, during, and after simultaneous accessory photic stimulation at seven different intensities. Sample epochs of auditory-cortex EEG acti...

The neural pathways that convey conditioned stimulus (CS) information to the cerebellum during eyeblink conditioning have not been fully delineated. It is well established that pontine mossy fiber inputs to the cerebellum convey CS-related stimulation for different sensory modalities (e.g., auditory, visual, tactile). Less is known about the sources of sensory input to the ...

The neural pathways that convey conditioned stimulus (CS) information to the cerebellum during eyeblink conditioning have not been fully delineated. It is well established that pontine mossy fiber inputs to the cerebellum convey CS-related stimulation for different sensory modalities (e.g., auditory, visual, tactile). Less is known about the sources of sensory input to the ...

A large body of literature implicates the amygdala in Pavlovian fear conditioning. In this study, we examined the contribution of individual amygdaloid nuclei to contextual and auditory fear conditioning in rats. Prior to fear conditioning, rats received a large electrolytic lesion of the amygdala in one hemisphere, and a nucleus-specific neurotoxic lesion ...

For accurate processing of auditory information, neurons in auditory brainstem nuclei have to fire at high rates with high temporal accuracy. These two requirements can only be fulfilled when the intrinsic electrical properties of these neurons are matched to the pattern of incoming synaptic stimulation. This review article focuses on ...

Toothed whales (odontocetes) are a promising paradigm for neurobiology and evolutionary biology. The ecophysiological implications and structural adaptations of their brain seem to reflect the necessity of effective underwater hearing for echolocation (sonar), navigation, and communication. However, not all components of the auditory system are equally well developed. Other ...

Cats were exposed to tones of 125, 1000, 2000, and 4000 Hz at sound pressure levels in the range 120

in the brainstem auditory nuclei of the barn owl (Tyto alba). J Comp Neurol 415:189�203. Laemmli UK (1970) Cleavage

A fundamental organizing principle of auditory brain circuits is tonotopy, the orderly representation of the sound frequency to which neurons are most sensitive. Tonotopy arises from the coding of frequency along the cochlea and the topographic organization of auditory pathways. The mechanisms that underlie the establishment of tonotopy are poorly ...

in species with spe- cialized accessory auditory structures such as the goldfish, catfish, herring for the salmonid trout (Schellart et al. 1987), cyprinid goldfish (Lu and Fay 1993) and mormyrid (Crawford 1993 for the trout (Wubbels et al. 1993) and twice that for the goldfish (Page 1970). The cause or influence

(1979a) Connectivity of the auditory forebrain nuclei in the guinea fowl (Numida meleagris). Cell Tissue in the auditory neostriatum of the Guinea fowl (Numida meleagris) to species-specific calls and synthetic stimuli) Responsiveness ofunits in the auditory neostriatum ofthe Guinea fowl (Numida meleagris) to ...

at E2. (F) Brain-stem section from the embryo shown in E after survival to E12. Labeled cells are found through the brain stem of the embryo shown in Fig. 3H. Many NM cells are labeled with DiI. NL, not shown examined the embryonic origins of cells in brain-stem auditory nuclei with particular emphasis on NM and NL

Auditory brainstem response and auditory cortex response were recorded repeatedly in 35 guinea pigs after exposure to intensive white noise (125 dB, 150 min.) for 62 d. the amplitude of evoked potential of acoustic nerve was decreased by 29% (P < 0.05), of the cochlear nuclei by 28% (P < 0.05). However, the amplitude of response ...

Owls are highly efficient predators with a specialized auditory system designed to aid in the localization of prey. One of the most unique anatomical features of the owl auditory system is the evolution of vertically asymmetrical ears in some species, which improves their ability to localize the elevational component of a sound stimulus. In the ...

Acetylcholine (ACh) is a neuromodulator that is likely to play a role in plasticity as well as other phenomena at many sites in the auditory system. The auditory cortex receives cholinergic innervation from the basal forebrain, whereas the cochlea receives cholinergic innervation from the superior olivary complex. Much of the remainder of the ...

The classic view of auditory information flow depicts a simple serial route from the periphery through tonotopically-organized nuclei in the brainstem, midbrain and thalamus, ascending eventually to the neocortex. Yet, complicating this picture are numerous parallel ascending and descending pathways, whose roles in auditory processing ...