NATURE OF RECRUITING RESPONSE

Abstract
The recruiting responses obtained by stimulating the diffuse thalamic projection system in the cat and in the monkey have been studied with the cathode ray oscillograph. Whether recorded in the cortex or in deep structures, the response consists of a series of phases of alternating polarities[long dash]the phase of major amplitude representing the classical recruiting response. A variety of tests have shown that all phases of the response are of local origin, although successive phases may be due to the activity of different local elements. The time and phase relations of responses from deep structures closely resemble those of cortical responses, suggesting that upon thalamic stimulation cortical and subcortical elements are set into action simultaneously. Each local response is thought to represent a phenomenon of oscillatory nature developing along closed chains of neurons.

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