Biomaterial Database

Functional morphology in the inferior colliculus of the marmoset. 1989

L J Garey, and W R Webster

Department of Anatomy, National University of Singapore, Kent Ridge.

The inferior colliculus of the marmoset was studied in sections prepared by Nissl and Golgi techniques. As in other primates and subprimates it can be divided into a central nucleus (CN) and a cortex, further divisible into dorsal cortical and lateral zones. Afferent fibres enter CN from the lateral lemniscus and fan out from posteroventrolateral to anterodorsomedial, forming a set of laminae along which neuronal somata and dendrites tend to be aligned. Neurons are commonly bitufted or bipolar, and sometimes multipolar, with dendritic arbors oriented along the laminae. Other axons cut across the laminae and are probably efferent fibres destined for the brachium of the inferior colliculus en route to higher levels. The cortex is composed of a variety of bipolar and multipolar neurons and is not laminated. Injection of 2-deoxyglucose while exposing the marmoset to auditory stimulation demonstrates that tones at 4 and 30 kHz cause labelling along the laminae near, respectively, the dorsolateral and ventromedial limits of CN.

UI	MeSH Term	Description	Entries
D007245	Inferior Colliculi	The posterior pair of the quadrigeminal bodies which contain centers for auditory function.	Colliculus, Inferior,Brachial Nucleus of the Inferior Colliculus,Caudal Colliculus,Colliculus Inferior,Inferior Colliculus,Posterior Colliculus,Colliculi, Inferior,Colliculus Inferiors,Colliculus, Caudal,Colliculus, Posterior,Inferior, Colliculus,Inferiors, Colliculus
D008297	Male		Males
D009474	Neurons	The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.	Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D010897	Pitch Discrimination	The ability to differentiate sound frequency or pitch.	Discrimination, Pitch,Pitch Discriminations
D002143	Callitrichinae	A subfamily in the family CEBIDAE that consists of four genera: CALLITHRIX (marmosets), CALLIMICO (Goeldi's monkey), LEONTOPITHECUS (lion tamarins), and SAGUINUS (long-tusked tamarins). The members of this family inhabit the tropical forests of South and Central America.	Cebuella,Genus Mico,Leontocebus,Mico Genus,Callithricidae,Callitrichidae,Cebuellas,Genus, Mico,Mico, Genus
D003712	Dendrites	Extensions of the nerve cell body. They are short and branched and receive stimuli from other NEURONS.	Dendrite
D005260	Female		Females
D000159	Vestibulocochlear Nerve	The 8th cranial nerve. The vestibulocochlear nerve has a cochlear part (COCHLEAR NERVE) which is concerned with hearing and a vestibular part (VESTIBULAR NERVE) which mediates the sense of balance and head position. The fibers of the cochlear nerve originate from neurons of the SPIRAL GANGLION and project to the cochlear nuclei (COCHLEAR NUCLEUS). The fibers of the vestibular nerve arise from neurons of Scarpa's ganglion and project to the VESTIBULAR NUCLEI.	Cranial Nerve VIII,Eighth Cranial Nerve,Cochleovestibular Nerve,Statoacoustic Nerve,Cochleovestibular Nerves,Cranial Nerve VIIIs,Cranial Nerve, Eighth,Cranial Nerves, Eighth,Eighth Cranial Nerves,Nerve VIIIs, Cranial,Nerve, Cochleovestibular,Nerve, Eighth Cranial,Nerve, Statoacoustic,Nerve, Vestibulocochlear,Nerves, Cochleovestibular,Nerves, Eighth Cranial,Nerves, Statoacoustic,Nerves, Vestibulocochlear,Statoacoustic Nerves,VIIIs, Cranial Nerve,Vestibulocochlear Nerves
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001306	Auditory Pathways	NEURAL PATHWAYS and connections within the CENTRAL NERVOUS SYSTEM, beginning at the hair cells of the ORGAN OF CORTI, continuing along the eighth cranial nerve, and terminating at the AUDITORY CORTEX.	Auditory Pathway,Pathway, Auditory,Pathways, Auditory