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Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...
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Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
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Psychophysiological Stress Assessment Using Biofeedback
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Psychophysiological stress influences temporal accuracy.

Nicola Cellini1, Simon Grondin2, Franca Stablum3

  • 1Department of General Psychology, University of Padova, Via Venezia 8, 35131, Padua, Italy. nicola.cellini@unipd.it.

Experimental Brain Research
|August 2, 2023
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Summary

Psychophysiological stress, induced by the Paced Auditory Serial Addition Test (PASAT), improved time perception accuracy in university students. This suggests stress can alter subsequent temporal processing.

Keywords:
Autonomic nervous systemFinger tappingHeart rateSkin conductanceTime bisection taskTime perception

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Psychophysiology

Background:

  • Arousal influences duration perception, but underlying mechanisms remain unclear.
  • Investigating the impact of induced physiological arousal on time perception is crucial.

Purpose of the Study:

  • To examine how induced physiological stress affects time perception.
  • To compare temporal performance between stressed and control groups.

Main Methods:

  • Thirty-eight university students participated.
  • Participants completed finger-tapping and time bisection tasks.
  • A stress group underwent the Paced Auditory Serial Addition Test (PASAT); a control group performed the Paced Auditory Number Reading Task (PANRAT).

Main Results:

  • The PASAT group reported higher arousal and unpleasantness, with increased heart rate.
  • Both groups showed similar finger-tapping performance.
  • The stress group exhibited enhanced temporal accuracy (lower constant error) in the time bisection task.

Conclusions:

  • Induced psychophysiological stress can improve subsequent time perception accuracy.
  • Stress-related alterations in temporal processing warrant further investigation.