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Related Experiment Videos

Depression: perspectives from affective neuroscience.

Richard J Davidson1, Diego Pizzagalli, Jack B Nitschke

  • 1Laboratory for Affective Neuroscience and W.M. Keck Laboratory for Functional Brain Imaging and Behavior, University of Wisconsin-Madison, Madison, Wisconsin 53705-2280, USA. rjdavids@facstaff.wisc.edu

Annual Review of Psychology
|December 26, 2001
PubMed
Summary

Depression disrupts mood and emotion regulation. This review models how brain circuitry, including the prefrontal cortex, hippocampus, and amygdala, becomes dysfunctional in depression, impacting emotional processing.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Science

Background:

  • Depression is a mood disorder affecting emotion representation and regulation.
  • Understanding the neural circuitry of emotion is crucial for deciphering depression's mechanisms.

Purpose of the Study:

  • To review the neural circuitry underlying normal emotion and mood.
  • To construct a model of how affect becomes disordered in depression.
  • To identify specific processing abnormalities in depression.

Main Methods:

  • Review of animal-level studies on emotion circuitry.
  • Analysis of human lesion studies.
  • Examination of human brain imaging studies.

Main Results:

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  • Abnormalities in the structure and function of the prefrontal cortex, anterior cingulate, hippocampus, and amygdala are implicated in depression.
  • Dysfunction in specific brain regions leads to distinct processing abnormalities.

Conclusions:

  • A model is proposed for disordered affect in depression based on neural circuitry.
  • Future research should focus on understanding processing abnormalities resulting from specific circuit dysfunctions.