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Titolo:
Morphological features of cat cervicothalamic tract terminations in different target regions
Autore:
Zhang, ML; Broman, J;
Indirizzi:
Univ Lund, Dept Physiol Sci, S-22362 Lund, Sweden Univ Lund Lund Sweden S-22362 nd, Dept Physiol Sci, S-22362 Lund, Sweden
Titolo Testata:
BRAIN RESEARCH
fascicolo: 2, volume: 890, anno: 2001,
pagine: 280 - 286
SICI:
0006-8993(20010202)890:2<280:MFOCCT>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
SILVER IMPREGNATION METHODS; LATERAL CERVICAL NUCLEUS; MEDIAL LEMNISCAL AXONS; DORSAL COLUMN NUCLEI; VENTROBASAL COMPLEX; THALAMIC PROJECTIONS; ORGANIZATION; NEURONS; IMMUNOREACTIVITY; INPUTS;
Keywords:
spinal cord; lateral cervical nucleus; thalamus; somatosensory; anterograde transport; cat;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Broman, J Univ Lund, Dept Physiol Sci, Solvegatan 19, S-22362 Lund, SwedenUniv Lund Solvegatan 19 Lund Sweden S-22362 -22362 Lund, Sweden
Citazione:
M.L. Zhang e J. Broman, "Morphological features of cat cervicothalamic tract terminations in different target regions", BRAIN RES, 890(2), 2001, pp. 280-286

Abstract

Using biotinylated dextran amine to label cervicothalamic tract terminations of cats, three types of terminal arrangements were recognized. The ventral posterior lateral nucleus contains the largest proportion of the cervicothalamic tract terminals (79%) and most (72%) of these are type I terminals(form compact clusters of 5-30 boutons). In contrast, type II (form less compact clusters of 3-10 boutons) and type III (widely spaced boutons along thin axons) terminals dominate in the medial nucleus of the posterior complex (78%) and in the ventral periphery of the ventrobasal complex (86%). In the magnocellular medial geniculate nucleus, type I terminals (38%) are found close to medially located clusters of Cat-301 immunoreactive neurons, whereas type II and type III terminals locate in the surrounding Cat-301-negative regions. These findings indicate a high degree of synaptic security inthe transmission between cervicothalamic tract fibers and neurons in the ventral posterior lateral nucleus and highlight the role of this nucleus in faithful transmission of cervicothalamic tract input to the cerebral cortex. Also, the Cat-301-positive neurons in the magnocellular medial geniculatenucleus may faithfully transmit cervicothalamic tract signals. The domination of type II and type III terminals in the medial nucleus of the posterior complex and in the ventral periphery of the ventrobasal complex indicatesa more divergent cervicothalamic input to these regions, in line with the large receptive fields and multimodal responses of neurons in the posteriorcomplex. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 04/12/20 alle ore 09:36:38