Inhibitory influence of oxytocin infusion on contingent negative variation and some memory tasks in normal men.
A double-blind study combining electrophysiological and psychometrical approaches was carried out to investigate the central effects of an intravenous oxytocin (OT) infusion in normal men. Contingent negative variation (CNV) was selected as the measure of central cognitive evoked potential, and the psychometric tests measured mood, vigilance and memory. OT infusion induced a significant decrease of CNV amplitude and an increase of post-imperative positive potentials in vertex derivations. A similar effect was still evidenced one week after treatment in frontal derivations, suggesting a long time effect of OT on human brain. No significant influence of OT on mood or vigilance tests was apparent; only one item of a memory test revealed a significant impairment of some mnesic performances. These observations provide new electrophysiological arguments supporting a central action of peripheral OT administration in man.
Geenen
V
V
Psychoneuroendocrinology Section, University of Liége-Sart Tilman, Belgium.
Adam
F
F
Baro
V
V
Mantanus
H
H
Ansseau
M
M
Timsit-Berthier
M
M
Legros
J J
JJ
D000328:Adult; D000339:Affect / Q000187:drug effects; D001143:Arousal / Q000187:drug effects; D001288:Attention / Q000187:drug effects; D003265:Contingent Negative Variation / Q000187:drug effects*; D004594:Electrophysiology / Q000187:drug effects*; D006801:Humans; D007262:Infusions, Intravenous; D008297:Male; D008568:Memory / Q000187:drug effects*; D011939:Mental Recall / Q000187:drug effects*; D009433:Neural Inhibition / Q000187:drug effects*; D010121:Oxytocin / Q000494:pharmacology*; D010364:Pattern Recognition, Visual / Q000187:drug effects; D011581:Psychological Tests
D010121:Oxytocin