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Early visual processing is enhanced in the midluteal phase of the menstrual cycle

journal contribution
posted on 2023-05-18, 16:32 authored by Bethany SandhuBethany Sandhu, Andrea CarrAndrea Carr, Ransan, VA, Bryant, RA, Kim FelminghamKim Felmingham
Event-related potential (ERP) studies have revealed an early attentional bias in processing unpleasant emotional images in women. Recent neuroimaging data suggests there are significant differences in cortical emotional processing according to menstrual phase. This study examined the impact of menstrual phase on visual emotional processing in women compared to men. ERPs were recorded from 28 early follicular women, 29 midluteal women, and 27 men while they completed a passive viewing task of neutral and low- and high- arousing pleasant and unpleasant images. There was a significant effect of menstrual phase in early visual processing, as midluteal women displayed significantly greater P1 amplitude at occipital regions to all visual images compared to men. Both midluteal and early follicular women displayed larger N1 amplitudes than men (although this only reached significance for the midluteal group) to the visual images. No sex or menstrual phase differences were apparent in later N2, P3, or LPP. A condition effect demonstrated greater P3 and LPP amplitude to highly-arousing unpleasant images relative to all other stimuli conditions. These results indicate that women have greater early automatic visual processing compared to men, and suggests that this effect is particularly strong in women in the midluteal phase at the earliest stage of visual attention processing. Our findings highlight the importance of considering menstrual phase when examining sex differences in the cortical processing of visual stimuli.

History

Publication title

Psychoneuroendocrinology

Volume

62

Pagination

343-351

ISSN

0306-4530

Department/School

School of Psychological Sciences

Publisher

Pergamon-Elsevier Science Ltd

Place of publication

United Kingdom

Rights statement

Copyright 2015 Elsevier Ltd.

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in psychology

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