TY - JOUR
T1 - Bilateral projections from the superior colliculus to the suprageniculate nucleus in the cat
T2 - A WGA-HRP/double fluorescent tracing study
AU - Katoh, Yoshimitsu Y.
AU - Benedek, György
AU - Deura, Shigeyuki
N1 - Funding Information:
This work was supported, in part, by the Narishige Foundation (1988), the Naito Foundation (1990), and by a Grant-in-Aid from the Fujita Health University, Japan. It was also supported by OTKA Grant 2712 (Hungary).
PY - 1995/1/16
Y1 - 1995/1/16
N2 - Following WGA-HRP injection into the right suprageniculate nucleus of the cat brain, retrogradely-labeled neurons were found not only in the ipsilateral, but also in the contralateral superior colliculi. After WGA-HRP injection into the unilateral superior colliculus, anterogradely-labeled axon terminals were observed in the bilateral suprageniculate nuclei, and electron microscopic examination revealed that these were large terminals which made asymmetric synaptic contacts with dendrites. When a different kind of fluorescent tracer was injected into each suprageniculate nucleus (Fast blue and Nuclear yellow), double-labeled neurons were observed in the rostral and middle portions of both superior colliculi. These results suggest that there are direct bilateral projections from the superior colliculus to the suprageniculate nuclei, and that some of these projections originate from branching colliculo-suprageniculate axons.
AB - Following WGA-HRP injection into the right suprageniculate nucleus of the cat brain, retrogradely-labeled neurons were found not only in the ipsilateral, but also in the contralateral superior colliculi. After WGA-HRP injection into the unilateral superior colliculus, anterogradely-labeled axon terminals were observed in the bilateral suprageniculate nuclei, and electron microscopic examination revealed that these were large terminals which made asymmetric synaptic contacts with dendrites. When a different kind of fluorescent tracer was injected into each suprageniculate nucleus (Fast blue and Nuclear yellow), double-labeled neurons were observed in the rostral and middle portions of both superior colliculi. These results suggest that there are direct bilateral projections from the superior colliculus to the suprageniculate nuclei, and that some of these projections originate from branching colliculo-suprageniculate axons.
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U2 - 10.1016/0006-8993(94)01203-T
DO - 10.1016/0006-8993(94)01203-T
M3 - Article
C2 - 7536104
AN - SCOPUS:0028881570
SN - 0006-8993
VL - 669
SP - 298
EP - 302
JO - Brain Research
JF - Brain Research
IS - 2
ER -