[Some peculiarities of neuron reaction in the upper and lower layer of the striate cortex]. / Nekotorye osobennosti neironnykh reaktsii verkhnikh i nizhnikh sloev striarnoi kory

Responses of 440 neurons in the albino rat visual cortex to flash were studied. The number of neurons with excitatory responses predominated in upper layers. Analysis of time parameters of secondary activation of the excitatory responses revealed 5 excitatory types of neuronal response. The excitatory responses of different types had an irregular distribution over layers with corresponding differences in change of information indices and response variability during primary activation. Moreover, information indices of neuronal responses in upper and lower layers changed unequally.