[Changes in pain sensitivity during electric stimulation of emotiogenic zones of the rabbit hypothalamus].

Electrical stimulation of 80% of negative and 82% of positive sites of the rabbit hypothalamus increased the latent period of thermal nociceptive stimulus avoidance and diminished the evoked potential amplitude in the parafascicular complex of the thalamus in response to electrical nociceptive stimulation of the skin. The opposite effects were evoked by subthreshold stimulation of the negative rather than positive sites. Electrical stimulation of neutral sites had not effect on the test parameters of pain sensitivity.