A projection of the lens accommodation-related area to the pupillo-constrictor area in the posteromedial lateral suprasylvian area in cats.
The fiber connection between areas related to lens accommodation and to pupillary constriction was studied in the posteromedial lateral suprasylvian area (PMLS) in the extrastriate cortex of the cat. The accommodation-related area was located in the PMLS by microstimulation, and the anterograde tracer Phaseolus vulgaris leucoagglutinin was injected into this area. Anterogradely-labeled fibers and terminals were found in the upper part of the medial bank of the middle suprasylvian sulcus, the area corresponding to the pupillo-constrictor area in the PMLS. The labeling was also found in the fundus of the middle suprasylvian sulcus, the medial bank of the lateral sulcus and the superficial layers of the superior colliculus. It is concluded that the area related to lens accommodation projects to the area related to pupillary constriction in the PMLS.
Yoshizawa
T
T
Department of Ophthalmology, Niigata University School of Medicine, Japan.
Takagi
M
M
Toda
H
H
Shimizu
H
H
Norita
M
M
Hirano
T
T
Abe
H
H
Iwata
K
K
Bando
T
T
D000065:Accommodation, Ocular; D000818:Animals; D001931:Brain Mapping; D002415:Cats; D002540:Cerebral Cortex / Q000033:anatomy & histology*; D007498:Iris / Q000294:innervation*; D007908:Lens, Crystalline / Q000294:innervation*; D008839:Microelectrodes; D009412:Nerve Fibers; D009434:Neural Pathways; D013477:Superior Colliculi / Q000033:anatomy & histology; D014795:Visual Pathways