Brain's reward circuit activity ebbs and flows with a woman's hormonal cycle

Fluctuations in sex hormone levels during women's menstrual cycles affect the responsiveness of their brains' reward circuitry, an imaging study at the National Institute of Mental Health, a component of the National Institutes of Health, has revealed. While women were winning rewards, their circuitry was more active if they were in a menstrual phase preceding ovulation and dominated by estrogen, compared to a phase when estrogen and progesterone are present.

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<p><a href="http://www.physorg.com/news89657567.html">Brain's reward circuit activity ebbs and flows with a woman's hormonal cycle</a></p> <p>Fluctuations in sex hormone levels during women's menstrual cycles affect the responsiveness of their brains' reward circuitry, an imaging study at the National Institute of Mental Health, a component of the National Institutes of Health, has revealed. While women were winning rewards, their circuitry was more active if they were in a menstrual phase preceding ovulation and dominated by estrogen, compared to a phase when estrogen and progesterone are present.</p>