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Related Experiment Videos

Estrogen and sequential movement

P J Jennings1, J S Janowsky, E Orwoll

  • 1Department of Neurology, Oregon Health Sciences University, Portland, USA. jennings@uwyo.edu

Behavioral Neuroscience
|March 28, 1998
PubMed
Summary

Estrogen levels in women correlate with faster sequential movement times. This suggests estrogen may influence motor control by interacting with dopamine in the brain.

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Motor Control

Background:

  • Normal movement relies on dopamine regulating basal ganglia function.
  • Basal ganglia are crucial for sequential movement performance.
  • Estrogen is known to modulate dopaminergic function in humans and animals.

Purpose of the Study:

  • To investigate the hypothesis that estrogen modulates sequential movement.
  • To examine the relationship between sex hormone levels and motor performance.

Main Methods:

  • Measured reaction time (RT) and movement time (MT) in a choice RT task.
  • Assessed 15 women and 10 men.
  • Correlated blood hormone levels (estradiol, testosterone) with keypressing performance.

Main Results:

  • Higher estradiol levels in women were associated with faster total movement time (RT + MT).
  • Testosterone levels in women did not correlate with keypressing performance.
  • Hormone levels in men were unrelated to keypressing performance.

Conclusions:

  • Women's motor performance is influenced by hormone levels.
  • Estrogen may interact with dopaminergic function to affect motor control in women.

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