The influence of estradiol and progesterone on neurocognition during three phases of the menstrual cycle: Modulating factors.
Level 5 - mechanism / opinion, no new human data
Narrative review without systematic search or quantitative data pooling
PubMed 34560130 · doi:10.1016/j.bbr.2021.113593
What was done
Narrative review evaluating literature on how estradiol and progesterone modulate neurocognition (specifically verbal and spatial abilities) across three menstrual cycle phases: early follicular phase (low estradiol, low progesterone), mid-luteal phase (high estradiol, high progesterone), and the frequently omitted ovulatory phase (high estradiol, low progesterone).
What was found
The abstract reports no numerical values or effect sizes. Qualitatively, prior studies on menstrual cycle effects on verbal and spatial abilities show mixed results driven by modulating factors: sample size, participant age, cycle day selection accuracy, asymmetrical practice effects, genetic polymorphisms, and task difficulty. More robust findings show improved mental rotation capacity during the early follicular phase on challenging tasks and differential brain activation across phases during spatial and verbal tasks. Mid-luteal phase findings were less robust.
Why it matters
Highlights key methodological confounders and the systematic omission of the ovulatory phase in menstrual cycle neurocognition research, offering design guidelines to reconcile conflicting literature.
Limits
Narrative review without systematic search criteria or quantitative meta-analysis. The abstract provides no sample sizes or effect size metrics. Conclusions rely on underlying studies with heterogeneous designs and phase-verification methods.
Cited by
- supports Following ovulation, estrogen levels experience a brief decrease before rising again and remaining elevated throughout the luteal phase.