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Brain Imaging Investigation of the Memory-Enhancing Effect of Emotion
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Published on: May 4, 2011

Progesterone at encoding predicts subsequent emotional memory.

Nicole Ertman1, Joseph M Andreano, Larry Cahill

  • 1Center for the Neurobiology of Learning and Memory, Department of Neurobiology and Behavior, University of California, Irvine, California 92697, USA. nertman@uci.edu

Learning & Memory (Cold Spring Harbor, N.Y.)
|November 22, 2011
PubMed
Summary
This summary is machine-generated.

Emotional memory performance fluctuates with the menstrual cycle. Progesterone levels, particularly during the luteal phase, significantly enhance recall of emotional events.

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Psychology

Background:

  • The relationship between stress hormones and memory exhibits significant sex differences.
  • Glucocorticoid effects on memory are modulated by the menstrual cycle, indicating interaction with ovarian hormones.

Purpose of the Study:

  • To investigate how hormonal fluctuations across the menstrual cycle influence memory for emotional materials.
  • To determine the role of ovarian sex hormones in modulating emotional memory.

Main Methods:

  • Sixty naturally cycling women rated images for arousal and valence.
  • Memory tests (free recall, recognition) were administered one week later.
  • Menstrual cycle phases were confirmed via salivary assays of 17β-estradiol and progesterone.

Main Results:

  • Memory for emotional items was significantly better in the high-hormone (luteal) phase compared to the low-hormone (follicular) phase.
  • Memory performance positively correlated with progesterone levels at encoding.
  • These effects were observed on free recall and recognition tests.

Conclusions:

  • Emotional memory performance varies across the menstrual cycle.
  • Endogenous progesterone plays a mediating role in these changes in emotional memory.