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The effect on slow wave sleep (SWS) of 5-HT antagonists with different affinities for 5-HT(1) and 5-HT(2) receptors was investigated using ambulatory EEG monitoring in normal volunteers. The selective 5-HT( 2) antagonists, ritanserin and cypropheptadine, increased SWS while the non-selective 5-HT antagonist metergoline did not. The histamine H( 1)-receptor antagonist, mepyramine, was similarly without effect on SWS. These findings suggest that home ambulatory monitoring with automatic sleep stage analysis may be useful in detecting the effect of selective 5-HT( 2) receptor antagonists on SWS.

Original publication




Journal article


J Psychopharmacol

Publication Date





125 - 129