caa a22 4500 397581459 CHVBK 20180308164908.0 cr unu---uuuuu 161202e199611 xx s 000 0 eng 10.1093/cercor/6.6.759 doi (NATIONALLICENCE)oxford-10.1093/cercor/6.6.759 Axonal Arborizations of Corticostriatal and Corticothalamic Fibers Arising from the Second Somatosensory Area in the Rat [Elektronische Daten] [Martin Lévesque, Serge Gagnon, André Parent, Martin Deschênes] Corticostriatal and corticothalamic projections arising from the second somatosensory area in the rat were studied after labeling small pools of neurons in laminae V and VI with biocytin. Tracing the axon of single neurons revealed the following principles of organization: (i) all corticostriatal and corticothalamic projections arising from layer V cells are collaterals of long-range corticofugal axons that also project below the thalamic level; (ii) all layer V cells that project to the thalamus also project to the striatum; (iii) all layer VI corticothalamic cells project exclusively to the thalamus; (iv) cells of the upper part of lamina VI send collaterals to the thalamic reticular nucleus and arborize in the ventrobasal complex forming rod-like terminal fields; and (v) cells of the lower part of lamina VI also send collaterals to the thalamic reticutar nucleus, give off few branches in the ventrobasal complex and terminate principally in the caudal part of the posterior thalamic group. On the basis of these findings, and in the light of previous anatomical studies, it is proposed that the above mentioned organizing principles represent general rules that also apply to corticostriatal and corticothalamic pathways arising from other areas of the neocortex. © 1996 Oxford University Press Articles nationallicence Lévesque Martin Centre de Recherche en Neurobiologie, Hôpital de l'Enfant-Jésus, 1401, 18ème rue, Québec City, Canada G1J 1Z4 aut Gagnon Serge Centre de Recherche en Neurobiologie, Hôpital de l'Enfant-Jésus, 1401, 18ème rue, Québec City, Canada G1J 1Z4 aut Parent André Centre de Recherche en Neurobiologie, Hôpital de l'Enfant-Jésus, 1401, 18ème rue, Québec City, Canada G1J 1Z4 aut Deschênes Martin Centre de Recherche en Neurobiologie, Hôpital de l'Enfant-Jésus, 1401, 18ème rue, Québec City, Canada G1J 1Z4 aut Cerebral Cortex Oxford University Press 6/6(1996-11), 759-770 1047-3211 6:6<759 1996 6 cercor https://doi.org/10.1093/cercor/6.6.759 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/cercor/6.6.759 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lévesque Martin Centre de Recherche en Neurobiologie, Hôpital de l'Enfant-Jésus, 1401, 18ème rue, Québec City, Canada G1J 1Z4 aut NATIONALLICENCE 700 1- Gagnon Serge Centre de Recherche en Neurobiologie, Hôpital de l'Enfant-Jésus, 1401, 18ème rue, Québec City, Canada G1J 1Z4 aut NATIONALLICENCE 700 1- Parent André Centre de Recherche en Neurobiologie, Hôpital de l'Enfant-Jésus, 1401, 18ème rue, Québec City, Canada G1J 1Z4 aut NATIONALLICENCE 700 1- Deschênes Martin Centre de Recherche en Neurobiologie, Hôpital de l'Enfant-Jésus, 1401, 18ème rue, Québec City, Canada G1J 1Z4 aut NATIONALLICENCE 773 0- Cerebral Cortex Oxford University Press 6/6(1996-11), 759-770 1047-3211 6:6<759 1996 6 cercor Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford