"GENERALIZATION" BETWEEN CORTICALLY AND PERIPHERALLY APPLIED STIMULI ELICITING CONDITIONED REFLEXES

Publisher Website
Google Scholar
Abstract
Eighty cats were trained to flex a foreleg to a criterion of at least 15 avoidances of the US (shock) for 25 daily presentations of a conditional stimulus (CS). The degree of stimulus generalization to a different CS was judged by comparing in each individual the performance to an initial modality of CS with that for a second, test modality. Generalization was almost uniformly present between tonal and photic CS or between homotopic cortical areas whose direct electrical excitation served as CS. Generalization also occurred readily: (1) when initial CS was presented via photic or auditory receptors and tested to direct cortical excitation; (2) when the cortical area initially excited as a CS was extirpated prior to testing by stimulation of a homotopic cortical point; and (3) when the hippocampal commissure and posterior 3/4 of the corpus callosum had been sectioned prior to using excitation of 1 middle ectosylvian gyrus as CS and testing to homotopic stimulation of the other hemisphere.

This publication has 0 references indexed in Scilit: