It was hypothesized that a combination of imagery and biofeedback would be more effective in reducing frontalis muscle tension than either imagery or biofeedback alone. Also, because spatial and artistic abilities are often attributed to right-brain strategies, it was hypothesized that subjects who use a "right-brained cognitive style would be more successful using guided imagery than subjects who use a "left-brained" cognitive style. Subjects were 12 college students, six "right-brained and six "left-brained" as determined by a hemispheric strategy questionnaire. Each subject received imagery, biofeedback or both for 6 nonconsecutive days.
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Haag, Lynda S., "Interaction of Hemispheric Brain Dominance and Treatment Type on Lowering the Frontalis Muscle Tension in College Students" (1991). Honors Theses, 1963-2015. 765.