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Titolo:
ORGANIZATION OF THE NUCLEUS MAGNOCELLULARIS AND THE NUCLEUS-LAMINARISIN THE BARN OWL - ENCODING AND MEASURING INTERAURAL TIME DIFFERENCES
Autore:
CARR CE; BOUDREAU RE;
Indirizzi:
UNIV MARYLAND,DEPT ZOOL COLL PK MD 20742
Titolo Testata:
Journal of comparative neurology
fascicolo: 3, volume: 334, anno: 1993,
pagine: 337 - 355
SICI:
0021-9967(1993)334:3<337:OOTNMA>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
STEM AUDITORY NUCLEI; ANTEROVENTRAL COCHLEAR NUCLEUS; MEDIAL SUPERIOR OLIVE; BRAIN-STEM; SOUND LOCALIZATION; TYTO-ALBA; HORSERADISH-PEROXIDASE; RESPONSE PROPERTIES; GABAERGIC NEURONS; NERVE FIBERS;
Keywords:
TIME; AXONS; DELAY; COINCIDENCE DETECTORS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
65
Recensione:
Indirizzi per estratti:
Citazione:
C.E. Carr e R.E. Boudreau, "ORGANIZATION OF THE NUCLEUS MAGNOCELLULARIS AND THE NUCLEUS-LAMINARISIN THE BARN OWL - ENCODING AND MEASURING INTERAURAL TIME DIFFERENCES", Journal of comparative neurology, 334(3), 1993, pp. 337-355

Abstract

The circuit from the cochlear nucleus magnocellularis to the nucleus laminaris supports the encoding and measurement of interaural time differences in the auditory brainstem. Specializations for the encoding of temporal information include the few and/ or short dendrites and thick axons of the magnocellular and laminaris neurons, and the high degree of convergence in the circuit. Magnocellular cells have large cell bodies covered with somatic spines. The cells have few dendrites, and the number of dendrites decreases from low to high best frequency regions of the nucleus. Magnocellular neurons receive both auditory nerve terminals and GABAergic terminals with symmetric synapses and terminals filled with pleomorphic vesicles. The axonal projections of magnocellular neurons to the nucleus laminaris form maps of interaural time difference. About 100 magnocellular afferents from each side converge oneach laminaris neuron, and the terminals from each side do not occupyseparate domains on the cell. These terminals form punctate asymmetric synapses on both the dendrites and the cell bodies of laminaris neurons. Laminaris neurons also receive GABAergic terminals which form symmetric synapses. Laminaris neurons have oval cell bodies covered with very short dendrites. The cells in the low best frequency region of the nucleus laminaris have longer dendrites. (C) 1993 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/10/20 alle ore 01:56:26