[Effect of arousing and somnogenic effects on the hypothalamus on the space-time organization of the internal connections of the somatosensory cortex].
Evoked potentials arising in the somatosensory cortex in response to single local stimulation of a forepaw, were recorded in cats in a state of slow-wave sleep and strained alertness elicited by electric activation of the basal preoptic area and posterior hypothalamus. Structure of connections between cortical points was studied by values of responses' amplitudes by means of correlation and factor analyses. It has been found that the organization of functional connections within the somatosensory cortex is determined by several factors, sensitive to hypothalamic influences. The most specific organization for each state is revealed at the stage of completion of the positive-negative complex of the primary response, which combines with the highest plasticity of connection formation.
D000818:Animals; D001931:Brain Mapping; D002415:Cats; D005073:Evoked Potentials, Somatosensory; D005163:Factor Analysis, Statistical; D007031:Hypothalamus / Q000502:physiology*; D007034:Hypothalamus, Posterior / Q000502:physiology; D009434:Neural Pathways / Q000502:physiology; D011301:Preoptic Area / Q000502:physiology; D011930:Reaction Time / Q000502:physiology; D012890:Sleep / Q000502:physiology*; D013003:Somatosensory Cortex / Q000502:physiology*
Prostranstvenno-vremennaia organizatsiia vnutrennikh sviazeĭ somatosensornoĭ kory v usloviiakh probuzhdaiushchikh i somnogennykh vozdeĭstvii gipotalamusa.