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Biofeedback control of skin potential level.

M R Volow, C W Erwin, A L Cipolat

Biofeedback and Self-Regulation

|June 1, 1979

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This study shows biofeedback can control electrodermal activity. Participants learned to arrest declines in skin potential level (SPL) and facilitate decreases, demonstrating SPL controllability.

Area of Science:

Psychophysiology
Behavioral Neuroscience

Background:

Tonic electrodermal levels exhibit spontaneous declines.
Understanding the controllability of electrodermal activity is crucial for psychophysiological research.

Purpose of the Study:

To investigate the efficacy of biofeedback in modulating tonic electrodermal activity.
To determine if subjects can learn to arrest spontaneous declines in skin potential level (SPL) negativity.

Main Methods:

Ten subjects underwent 3 days of biofeedback training.
Training involved sessions to increase (arrest declines) and decrease (facilitate declines) SPL negativity.
Simultaneous analogue and binary feedback of SPL were utilized.

Main Results:

Related Experiment Videos

Training to increase SPL negativity successfully arrested spontaneous declines.

Training to decrease SPL negativity facilitated SPL declines.

A significant mean difference of 8.28 mV was observed between increase and decrease conditions on day 3.

Locus of Control and the Law of Initial Values influenced SPL variability.

Conclusions:

Skin potential level (SPL) is controllable through biofeedback, specifically for arresting declines.
Biofeedback offers a viable method for modulating electrodermal responses.
Individual differences, such as Locus of Control, may impact biofeedback efficacy.