Worry, generalized anxiety disorder, and emotion: Evidence from the EEG gamma band

Desmond J. Oathes, William J. Ray, Alissa S. Yamasaki, Thomas D. Borkovec, Louis Georges Castonguay, Michelle Gayle Newman, Jack Nitschke

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

The present study examined EEG gamma (35-70 Hz) spectral power distributions during worry inductions in participants suffering from generalized anxiety disorder (GAD) and in control participants without a history of psychiatric illness. As hypothesized, the EEG gamma band was useful for differentiating worry from baseline and relaxation. During worry induction, GAD patients showed higher levels of gamma activity than control participants in posterior electrode sites that have been previously associated with negative emotion. Gamma fluctuations in these electrode sites were correlated with subjective emotional experience ratings lending additional support to interpretations of negative affect. Following 14 weeks of psychotherapy, the GAD group reported less negative affect with worry inductions and the corresponding gamma sites that previously differentiated the clinical from control groups changed for the GAD patients in the direction of control participants. These findings suggest converging evidence that patients suffering from GAD experience more negative emotion during worry and that the EEG gamma band is useful for monitoring fluctuations in pathological worry expected to follow successful treatment.

Original languageEnglish (US)
Pages (from-to)165-170
Number of pages6
JournalBiological Psychology
Volume79
Issue number2
DOIs
StatePublished - Oct 1 2008

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Anxiety Disorders
Electroencephalography
Emotions
Electrodes
Psychotherapy
Psychiatry
Control Groups
Therapeutics

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Neuropsychology and Physiological Psychology

Cite this

Oathes, Desmond J. ; Ray, William J. ; Yamasaki, Alissa S. ; Borkovec, Thomas D. ; Castonguay, Louis Georges ; Newman, Michelle Gayle ; Nitschke, Jack. / Worry, generalized anxiety disorder, and emotion : Evidence from the EEG gamma band. In: Biological Psychology. 2008 ; Vol. 79, No. 2. pp. 165-170.
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Worry, generalized anxiety disorder, and emotion : Evidence from the EEG gamma band. / Oathes, Desmond J.; Ray, William J.; Yamasaki, Alissa S.; Borkovec, Thomas D.; Castonguay, Louis Georges; Newman, Michelle Gayle; Nitschke, Jack.

In: Biological Psychology, Vol. 79, No. 2, 01.10.2008, p. 165-170.

Research output: Contribution to journalArticle

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