[The characteristics of the functional topology of Lashley's area in the rat cerebral cortex during different complex visual stimuli under alternative choice conditions].

In the result of our investigation it was determined: a) The ability to discriminate the complicated visual stimuli in rats depends on small part of occipital region of cerebral cortex critically. This is "Lashley zone". b) The location of this part of the cortex is the border between Ocl (17 field) and Oc2.1 (18a field), that and disagrees with the location of K. Lashley's "c" and "b" fields, although it includes largest part of "b" field.; c) The extirpation of this part of cerebral cortex leads to the irreversible loss of visual discrimination skill. But the control experiments demonstrated, that the ability to the keen visual differentiation and motor component of conditioned reflex were maintained.