Hormone therapy does not modify emotion-induced brain activity in older women

Area of Science:

• Neuroscience
• Endocrinology
• Psychology

Background:

• Sex hormones influence emotional processing in brain regions like the amygdala and prefrontal cortex.
• Previous research indicates cyclic hormones and post-menopausal hormone therapy can alter emotional responses.
• The impact of hormone therapy on emotion-induced neural activity in older women remains an area for investigation.

Purpose of the Study:

• To investigate whether hormone therapy affects emotion-induced brain activity in older women.
• To examine the influence of hormone therapy on the amygdala and ventrolateral prefrontal cortex (VLPFC) response to emotional stimuli.
• To assess the effects of hormone therapy on behavioral and memory-related outcomes associated with emotional events.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was employed to measure brain activity.
• Participants included older women currently using hormone therapy (HT) and a control group not using hormone therapy (NONE).
• Behavioral ratings (valence, arousal) and recognition memory tests were administered alongside fMRI scans.

Main Results:

• Hormone therapy did not significantly alter emotion-induced brain activity in the amygdala or VLPFC.
• A modest increase in amygdala activity to positive scenes over time was observed in the NONE group, but not the HT group.
• No significant differences were found in behavioral ratings or memory recall for emotional scenes between the groups.

Conclusions:

• Current hormone therapy does not appear to modify emotion-induced brain activity or its persistence in older women.
• The findings suggest that hormone therapy does not play a significant role in modulating emotional processing in the aging brain.
• Further research may be needed to explore potential long-term or nuanced effects of hormone therapy on emotional regulation.