Galanin-like immunoreactivity co-exists with choline acetyltransferaselike immunoreactivity in neurons of the septal-hippocampal and nucleus basalis of Meynert-neocortical pathways. These structures mediate some forms of cognition, and characteristically degenerate in Alzheimer's disease. Biochemical, neurophysiological and behavioral studies indicate that galanin acts as an inhibitory modulator of cholinergic function. In this article, we consider the possibility of a role for galanin in memory processes and dementia.
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