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Lab study, 2009

Does emotional response to sexual images change during the menstrual cycle?

Yes. Women show more positive emotional reactions to images of nude men during the early part of the cycle compared to the later part.

Moderate study design 35 healthy women

What they did

35 healthy women had two facial muscle recording sessions (EMG). One session happened in the early part of their cycle, the other in the later part. Researchers showed them pictures of nude men or animals and measured the muscle activity responsible for expressing joy.

What they found

During the early cycle phase, significantly more joy muscle reactions were observed compared to the later phase. This effect was only found for pictures of nude men, not for animal pictures.

What it means for you

Women's positive emotional response to sexual images increases during the early part of the menstrual cycle when fertility is highest. This may help explain why sexual interest naturally rises around ovulation. The study is small and only measured one emotional response in one context.

35

women studied

2

facial muscle recording sessions per woman

early phase

time of stronger joy reactions

About the study

Original title
Why we haven't died out yet: changes in women's mimic reactions to visual erotic stimuli during their menstrual cycles
Authors
Mass R, Hölldorfer M, Moll B et al.
Journal
Hormones and behavior
Year
2009
Study design
Lab study
Participants
35

Topics