On the short-loop feedback regulation of the hypothalamic luteinizing hormone releasing hormone 'pulse generator' in the rhesus monkey.

The characteristic electrophysiological manifestations of LHRH 'pulse generator' activity were unaffected by prolonged elevations in plasma LH concentrations achieved by the administration of a long-acting LHRH agonist. These findings do not lend support to the existence of a 'short-loop feedback' inhibition of LHRH 'pulse generator' activity by LH.