Type of Document	Dissertation
Author	Rhodes, Robert D.
URN	etd-05042012-112637
Title	Frontal Lobe Correlates in Hostile Men: Analysis of Facial Motor Tone and Cardiovascular Regulation
Degree	PhD
Department	Psychology
Advisory Committee	Advisor Name Title Harrison, David W. Committee Chair Bell, Martha Ann Committee Member Clum, George A. Jr. Committee Member Jones, Russell T. Committee Member
Keywords	EMG Cardiovascular Reactivity Masseter Corrugator Hostility
Date of Defense	2010-04-28
Availability	restricted
Abstract This experimented proposed to test the relationships between self-reported hostility and both facial muscle tone and cardiovascular functioning. Based on previous research, it was proposed that individuals high in self-reported hostility would show increased cardiovascular reactivity in response to a physical stressor (the cold-pressor task). Additionally, based on the integration of multiple lines of research, it was proposed that individuals with high levels of self-reported hostility would show asymmetric facial tone, with greater muscle activation at the left-hemiface. Results showed increased cardiovascular responding in the high-hostile participants following exposure to the cold-pressor task. Additionally, the individuals with high levels of self-reported hostility did show asymmetric facial tone, with increased left-hemifacial EMG values. These differences were present prior to exposure to the cold-pressor task, and were increased following the stressor. Results supported the literature showing increased cardiovascular responding to stress in high-hostile individuals, and also supported the proposed relationship between right orbitofrontal functioning and hostility.
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