Abstract
It has been shown [9, 13] that the late component of associative responses (LCAR) recorded during stimulation of different modalities in the parietal region of the cortex in conscious and chloralose-anesthetized cats, and which is formed by impulses of nonspecific origin, spreads diffusely over the surface of this cortical formation. Pentobarbital anesthesia, which blocks conduction of signals generating LCAR, at the same time optimizes the arrival in the parietal cortex of specific signals which, as our data [7] show, during stimulation of different sensory systems evoked a well marked early component of associative responses (ECAR), masked by the LCAR under the experimental conditions described above. During peripheral somatic stimulation in different parts of the body (foreand hindlimbs, trigeminal nerve) the ECAR, unlike the LCAR, is maximally represented in the zone of the parietal region that borders on the corresponding projection zone of the somatic system, and diminishes with increasing distance from this projection zone. Meanwhile, the maximal ECAR to peripheral visual stimuli is recorded in the middle part of the parietal cortex [6].
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