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Affective individual differences and startle reflex modulation.

E W Cook1, L W Hawk, T L Davis

  • 1Department of Psychology, University of Alabama, Birmingham 35294.

Journal of Abnormal Psychology
|February 1, 1991
PubMed
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Startle response potentiation occurs in aversive emotional states and is heightened in individuals with higher fear. This effect may also relate to other individual differences in negative affect.

Area of Science:

  • Psychophysiology
  • Affective Science
  • Clinical Psychology

Background:

  • Startle potentiation is linked to aversive emotional states and fear/anxiety.
  • Previous research suggests a connection between potentiated startle and negative emotions.

Purpose of the Study:

  • To examine startle potentiation across diverse emotional states.
  • To investigate the influence of individual fearfulness on startle potentiation.

Main Methods:

  • Assessed acoustic startle response in 17 high-fear and 15 low-fear adults.
  • Measured startle during imagery inducing fear, anger, joy, sadness, relaxation, and neutral states.

Main Results:

  • Startle responses were significantly larger during aversive affective states compared to pleasant imagery.

Related Experiment Videos

  • This potentiation effect was amplified in high-fear subjects.
  • Individual differences in depression and anger may also influence startle potentiation in negative affect.

    • Conclusions:

    • Startle potentiation is a robust indicator of aversive emotional states.
    • Individual fearfulness significantly modulates startle potentiation.
    • Further research is needed to explore the role of other affective individual differences.