The Neural
Control of Vision
G. The Function of the On and Off Channels in Vision
This
V1 complex cell shown in Figure 23
in V1 responds to both the light and dark edges of the bar that moves
across its receptive field. It responds better to downward right movement
that upward left movement, hence it exhibits moderate direction selectivity.
APB blocks the light edge response but does not affect directionality.
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