Abstract
At many sites in the brain, electrical stimulation with low current intensity is both aversive and causes antinociception. In view of the well documented antinociception caused by various types of stress (Watkins et al . 1982) and pain (Wand-Tetley 1945; Le Bars et al. 1979), it is possible that in some parts of the brain the antinociception is secondary to the stress of the stimulation.