A systematic map of direction preference in primary visual cortex

Article Abstract:

Optical imaging of intrinsic signals in cats reveals an ordered arrangement of direction selective responses in the cortical areas 17 and 18. The map contains various regions of high selectivity in which direction preference changes in a continuous, slow manner. The different regions are separated by narrow bands of low selectivity through which direction preference alters randomly by 180 degrees. The results of systematic mapping of direction preference in primary visual cortex agree well with those of closely spaced microelectrode recordings.

Visual cortex, Brain mapping, Orientation (Physiology)

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The contribution of sensory experience to the maturation of orientation selectivity in ferret visual cortex

Article Abstract:

Research is presented concerning the influence of visual experience on the maturation of cortical circuits associated with orientation selectivity in the ferret. The relationship with endogenous mechanisms of development is discussed.

Letter to the Editor, Vision, Ferrets, Higher nervous activity

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