Bilateral projection of nigro-collicular neurons: An electrophysiological analysis in the rat.
In response to stimulation of the deep layers of the superior colliculus (SC) in the rat, nigral neurons were antidromically activated (latency 0.5-1.5 msec). Effective stimulations were located in ipsi- or contralateral SC deep layers lying above the central gray (CG) or more laterally; nigro-collicular neurons are exclusively located in the pars reticulata of the substantia nigra (SN) and some of them project both to ipsi- and contralateral SC. The functional significance of this nigral projection is discussed.
Deniau
J M
JM
Laboratoire de Physiologie des Centres Nerveux, Université Pierre et Marie Curie, 4, avenue Gordon-Bennett, 75016 Paris, France.
Hammond-Le Guyader
C
C
Feger
J
J
McKenzie
J S
JS