Abstracts of Papers Presented to the Eleventh Annual Meeting of the Association of the Psychophysiological Study of Sleep.

This article presents abstracts of papers presented to the 11th annual meeting of the Association for the Psychophysiological Study of Sleep. "Effects of Centrally Administered Carbachol on Sleep in Cats," was presented by Peter J. Morgane, Warren C. Stern and Joseph D. Bronzino. In order to delineate chemo-specific neurobehavioral systems in the brain concerned with sleep rates, exploring chemitrode devices were implanted in cats wired for recording the usual sleep indicators. It is also possible that cholinergic synapses exist in the noradrenergic or serotonergic pathways and that these systems are activated by cholinergic stimulation, thus resulting in changes in the sleep states.