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Related Experiment Videos

Impending electrical shock can affect response force in a simple reaction task

P Jaśkowski1, M Wróblewski, D Hojan-Jezierska

  • 1Department of Biophysics, Medical Academy in Poznań, Poland.

Perceptual and Motor Skills
|October 1, 1994
PubMed
Summary

Electrical shocks increased response force in a simple reaction time task. This suggests stress enhances motor output, aligning with Sanders

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Area of Science:

  • Cognitive psychology
  • Human factors engineering
  • Psychophysiology

Background:

  • Stress and activation are known to influence human performance.
  • Previous research suggests a complex relationship between arousal levels and task execution.

Purpose of the Study:

  • To investigate the effect of noninformative electrical shock as a stressor on reaction time and response force.
  • To examine how induced activation impacts motor output in a simple reaction time task.

Main Methods:

  • Twenty subjects participated in a simple reaction time task.
  • Response times and force were measured.
  • Activation was manipulated by the occasional delivery of noninformative electrical shocks.

Main Results:

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  • Response forces were significantly larger in blocks with electrical shocks compared to control blocks without shocks.
  • Reaction times were also measured but the primary finding focused on response force.

Conclusions:

  • The findings support the notion that stress, induced by electrical shock, increases the force of motor responses.
  • Results are discussed within the framework of Sanders' model of stress and activation.