[Neurophysiologic analysis of the bilateral organization of the associative parietal regions of the neocortex in the cat].
In cats under Nembutal anesthesia, impulses come to the parietal areas of both hemispheres, which, when evoked by unilateral stimulation of fore- and hind-paws, converge at the same cortical points forming early components of associative responses (ECAR). In responses to contralateral paws' stimulation, individual interhemispheric functional asymmetry is shown. The influence of the contralateral parietal area on the ipsilateral one is more strong than the reverse effect. In contrast to ECAR formation on the contralateral side as a result of the arrival of impulses of specific genesis along the "classical" lemniscal tract,--the signals of the same type participating in the initiation of ECAR in the ipsilateral hemisphere, on their way form a relay in the thalamus and the same zone of the opposite side via the interthalamic commissure and callosal body, correspondingly. It is suggested that along with the arrival of impulses through the mentioned crossed tracts, ECAR generation in the ipsilateral parietal cortex involves impulses, coming through the uncrossed channel of the extralemnisc tract.
D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D001244:Association; D001931:Brain Mapping; D002415:Cats; D003337:Corpus Callosum / Q000502:physiology; D004292:Dominance, Cerebral / Q000502:physiology*; D005121:Extremities / Q000294:innervation; D008526:Medulla Oblongata / Q000502:physiology; D009434:Neural Pathways / Q000502:physiology; D010296:Parietal Lobe / Q000502:physiology*; D013787:Thalamic Nuclei / Q000502:physiology
Neĭrofiziologicheskiĭ analiz bilateral'noĭ organizatsii assotsiativnykh temennykh oblasteĭ neokorteksa koshki.