Why the study?
Dynamic alterations in sex steroidal hormones during the menstrual cycle affect systemic organs and higher functions, prompting an evaluation of hormonal influence on cognitive function using short-term heart rate variability across cycle phases.
Does the phase of the menstrual cycle influence cognitive performance and heart rate variability in young subjects?
Does the phase of the menstrual cycle influence cognitive performance and heart rate variability in young subjects?
The menstrual cycle phase influences autonomic tone, with increased sympathetic discharge during the follicular phase, which is associated with changes in cognitive functioning.
Answers are grounded in this paper and cite their sources.
May link menstrual hormones to HRV and vigilance; hypothesis-generating and requires confirmation before any clinical relevance.
Menstrual cycle characterized by various dynamic alterations in sex steroidal hormones not only alters the reproductive organs but also various systemic organs and hence higher functions are one among them. This study is an attempt to determine the influence of various hormones on cognitive function using short term heart rate variability analysis in different phases of menstrual cycle. Thirty participants were subjected for the baseline recording of HRV and psychomotor vigilance test and short term memory test along with HRV recording in three subsequent numbers of times to study variations in three different phases of menstrual cycle . Both time domain and frequency domain parameters were studied during resting state and while performing psychomotor vigilance test and short term memory test. The time domain and frequency domain parameters on comparison with resting state to during psychomotor vigilance test and short term memory test parameters were statistically insignificant in all three phases recorded. Unlikely on comparison of heart rate variability parameters both times domain and frequency domain values of RRI, RMSSD and LF (nu) values were statistically significant across the different phases suggesting upper hand of sympathetic tone. The present study indicated increased sympathetic discharge during follicular phase on comparison to luteal and menstrual phase. The results also indicated a change in cognitive functioning during different phases due to hormonal variations.
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R et al. (2020) studied this question.
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