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Contingent negative variation and personality in depression.

M Hansenne1, M Ansseau

  • 1Department of Psychiatry, Centre Hospitalier Universitaire du Sart Tilman (B-35), Liège, Belgium. michel.hansenne@ulg.ac.be

Neuropsychobiology
|June 16, 2001
PubMed
Summary

This study explored how personality traits influence Contingent Negative Variation (CNV) in depression. Depressed patients showed a link between CNV amplitude and self-transcendence, while healthy individuals showed links with novelty seeking and persistence.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Psychophysiology

Background:

  • Contingent Negative Variation (CNV) studies in depression yield inconsistent results, potentially due to patient heterogeneity.
  • Personality traits are known to influence CNV in healthy individuals, but their impact on CNV in depression remains understudied.

Purpose of the Study:

  • To investigate the relationship between CNV amplitude and personality dimensions assessed by the Temperament and Character Inventory (TCI) in depressed patients.
  • To compare these relationships in depressed patients with those in healthy volunteers.

Main Methods:

  • Fifty-two depressed patients and 76 healthy volunteers participated.
  • CNV amplitude was measured and correlated with TCI personality dimensions.

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Main Results:

  • In depressed patients, CNV amplitude positively correlated with the self-transcendence dimension.
  • In healthy volunteers, CNV amplitude negatively correlated with novelty seeking and persistence dimensions.
  • Other TCI dimensions showed no significant correlation with CNV in either group.

Conclusions:

  • Findings suggest lower CNV amplitude in depressed patients may relate to psychotic traits (high self-transcendence).
  • Results in healthy individuals align with previous research supporting energetic models of slow potentials.
  • The preliminary nature and weak statistical significance of these findings warrant further investigation.