Autonomic activity in subjects reporting changes in affect in the menstrual cycle

Area of Science:

• Neuroscience
• Psychophysiology
• Reproductive Biology

Background:

• The menstrual cycle is associated with cyclical changes in mood and affect.
• Autonomic nervous system (ANS) activity is a key physiological correlate of emotional and affective states.
• Previous research has yielded mixed results regarding ANS function across the menstrual cycle.

Purpose of the Study:

• To investigate potential differences in autonomic activity during distinct phases of the menstrual cycle.
• To correlate objective physiological measures of autonomic function with subjective reports of affect.

Main Methods:

• Autonomic nervous system activity was assessed using [specific physiological measures, e.g., heart rate variability, skin conductance].
• Participants were studied during different phases of their menstrual cycle (e.g., follicular, luteal).
• Subjective mood and affect were self-reported by participants.

Main Results:

• No statistically significant differences in autonomic activity parameters were detected between menstrual cycle phases.
• Reported changes in affect did not correlate with measurable differences in autonomic nervous system function.

Conclusions:

• Objective measures of autonomic nervous system activity do not appear to vary significantly across the menstrual cycle.
• Subjective experiences of affect changes during the menstrual cycle may not be directly reflected in current autonomic measures.