Physiological Responses to Pictures and Exercise in Dysphoria
Principal Investigator: JEROME CARSON SMITH
Abstract: Two experiments are proposed. Each is designed to provide the background for a line of research aimed at examining the potential therapeutic effects of physical activity among individuals diagnosed with a mood disorder. This proposal considers the effect of exercise on emotional responsiveness in dysphoric individuals. The purpose of experiment one is to examine facial electromyographic (EMG), heart rate, blood pressure, and skin conductance responses during sustained periods of pleasant, neutral, and unpleasant picture viewing in dysphoric and non-dysphoric individuals who vary in their self-reported level of physical activity. It is predicted that dysphoric individuals will exhibit a blunted emotional responsiveness to arousing pleasant stimuli, and furthermore, that this effect will be greater among non-physically active individuals. The purpose of experiment two is to examine the effect of acute physical exercise, compared to a resting control condition, on psychophysiological responses during emotional picture viewing in dysphoric compared to non-dysphoric individuals. It is predicted that exercise will activate the appetitive emotional system in dysphoric individuals and restore appetitive emotional responsiveness. In addition, aerobic fitness is expected to be positively related to emotional responsiveness to both pleasant and unpleasant stimuli at baseline in both groups of individuals. The largest effect for restoring pleasant emotional responsiveness is expected to occur in the least aerobically fit dysphoric individuals.
Funding Period: 2003-02-28 - 2005-02-27
more information: NIH RePORT
- State anxiety and affective physiology: effects of sustained exposure to affective picturesJ Carson Smith
Center for the Study of Emotion and Attention, PO Box 100165 HSC, University of Florida, Gainesville, FL 32610 0165, USA
Biol Psychol 69:247-60. 2005..These findings suggest sustained exposure to unpleasant pictures may induce a short-term mood state, and may be a useful paradigm to study individuals who vary in symptoms of anxiety...
- Rapid picture presentation and affective engagementJ Carson Smith
Center for the Study of Emotion and Attention, University of Florida, FL, USA
Emotion 6:208-14. 2006..The findings suggest that, despite conceptual masking inherent in rapid serial visual presentation, affective pictures prompt measurable emotional engagement...