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Intoxication level and emotional response.

Keith F Donohue1, John J Curtin, Christopher J Patrick

  • 1Department of Psychology, Florida State University, FL, USA.

Emotion (Washington, D.C.)
|March 14, 2007
PubMed
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Higher alcohol intoxication levels selectively reduce anxiety responses to unpleasant stimuli, as measured by startle reflex potentiation, without affecting positive emotional responses.

Area of Science:

  • Psychopharmacology
  • Neuroscience
  • Affective Science

Background:

  • Alcohol intoxication is known to affect emotional processing.
  • The startle reflex, particularly its modulation by emotion, offers a window into these effects.

Purpose of the Study:

  • To investigate the impact of varying alcohol intoxication levels on emotional responses.
  • To determine if alcohol selectively affects responses to negative versus positive stimuli.

Main Methods:

  • Utilized the eye-blink startle reflex to measure affective modulation.
  • Assessed responses to pleasant, neutral, and unpleasant images across four groups: no, low, intermediate, and high alcohol intoxication.
  • Recruited 101 non-problematic student drinkers.

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Main Results:

  • Normal inhibition of startle to pleasant pictures remained consistent across all intoxication levels.
  • Potentiation of startle to unpleasant pictures was reduced significantly in intermediate and high intoxication groups compared to no- and low-intoxication groups.

Conclusions:

  • Alcohol exhibits a direct and selective anxiolytic effect at higher intoxication levels.
  • This anxiolytic effect appears specific to negative stimuli, with no comparable impact on positive emotional responses at similar intoxication levels.