The orientation bias of LGN neurons shows topographic relation to area centralis in the cat retina

Springer Science and Business Media LLC - Tập 64 - Trang 233-236 - 1986
T. Shou1, D. Ruan1, Y. Zhou1
1Vision Research Laboratory, Department of Biology, University of Science and Technology of China, Hefei, Anhui, People's Republic of China

Tóm tắt

The orientation sensitivity of LGN cells to flickering square-wave gratings was measured in urethane-anaesthetized paralyzed cats. The mean ratio of the amplitude of peak responses to optimally oriented gratings to that elicited by gratings of the least effective orientation was 3.0 ± 0.3 (S.E.). 58% of the recorded neurons responded best to orientations within 30° of the meridional line joining their receptive field center with the fixation points (area centralis), implying that they were more sensitive to visual contours pointing to the center of the retina.

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