[Cortical representation of the heart sinus node zone].
Evoked potentials (EP) arising in response to electrical stimulation of the heart sinus node zone (SNZ) were registered in the cortex of the large hemispheres (LHS) of cats. EP with the shortest latent period (LP) of 18-19 months were recorded both in the left and right hemispheres in the area of a cross-shaped cleft (associative field PCA, partially the I motorsensor zone and the I sensorimotor zone). Besides, EP with a more durable LP (20-21 months) were registered in the 2nd sensorimotor zone. EP remained unchanged after bilateral vagotomy and disappeared after spinal cord cutting at C-2 level. The presence of the functional centre regulating cardiac activity in the branch sections of LHS is suggested.
D000818:Animals; D002415:Cats; D002540:Cerebral Cortex / Q000502:physiology*; D004558:Electric Stimulation; D005071:Evoked Potentials; D005073:Evoked Potentials, Somatosensory; D011930:Reaction Time; D012849:Sinoatrial Node / Q000502:physiology*; D013116:Spinal Cord / Q000502:physiology; D014628:Vagotomy; D014630:Vagus Nerve / Q000502:physiology
Korkovoe predstavitel'stvo zony sinusnogo uzla serdtsa.