Heightened Functional Neural Activation to Psychological Stress Covaries With Exaggerated Blood Pressure Reactivity
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- Peter J. Gianaros
- From the Department of Psychiatry (P.J.G., J.R.J., L.K.S., K.A.M.), University of Pittsburgh, Pa; and the School of Psychology (S.W.G.D.), University of Birmingham, Edgbaston, United Kingdom.
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- J. Richard Jennings
- From the Department of Psychiatry (P.J.G., J.R.J., L.K.S., K.A.M.), University of Pittsburgh, Pa; and the School of Psychology (S.W.G.D.), University of Birmingham, Edgbaston, United Kingdom.
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- Lei K. Sheu
- From the Department of Psychiatry (P.J.G., J.R.J., L.K.S., K.A.M.), University of Pittsburgh, Pa; and the School of Psychology (S.W.G.D.), University of Birmingham, Edgbaston, United Kingdom.
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- Stuart W.G. Derbyshire
- From the Department of Psychiatry (P.J.G., J.R.J., L.K.S., K.A.M.), University of Pittsburgh, Pa; and the School of Psychology (S.W.G.D.), University of Birmingham, Edgbaston, United Kingdom.
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- Karen A. Matthews
- From the Department of Psychiatry (P.J.G., J.R.J., L.K.S., K.A.M.), University of Pittsburgh, Pa; and the School of Psychology (S.W.G.D.), University of Birmingham, Edgbaston, United Kingdom.
説明
<jats:p> Individuals who show exaggerated blood pressure reactions to psychological stressors are at increased risk for hypertension, atherosclerosis, and stroke. We tested whether individuals who show exaggerated stressor-induced blood pressure reactivity also show heightened stressor-induced neural activation in brain areas involved in controlling the cardiovascular system. In a functional MRI study, 46 postmenopausal women (mean age: 68.04; SD: 1.35 years) performed a standardized Stroop color-word interference task that served as a stressor to increase blood pressure. Across individuals, a larger task-induced rise in blood pressure covaried with heightened and correlated patterns of activation in brain areas implicated previously in stress-related cardiovascular control: the perigenual and posterior cingulate cortex, bilateral prefrontal cortex, anterior insula, and cerebellum. Entered as a set in hierarchical regression analyses, activation values in these brain areas uniquely predicted the magnitude of task-induced changes in systolic (Δ <jats:italic>R</jats:italic> <jats:sup>2</jats:sup> =0.54; <jats:italic>P</jats:italic> <0.001) and diastolic (Δ <jats:italic>R</jats:italic> <jats:sup>2</jats:sup> =0.27; <jats:italic>P</jats:italic> <0.05) blood pressure after statistical control for task accuracy and subjective reports of task stress. Heightened stressor-induced activation of cingulate, prefrontal, insular, and cerebellar brain areas may represent a functional neural phenotype that characterizes individuals who are prone to show exaggerated cardiovascular reactivity. </jats:p>
収録刊行物
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- Hypertension
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Hypertension 49 (1), 134-140, 2007-01
Ovid Technologies (Wolters Kluwer Health)
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詳細情報 詳細情報について
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- CRID
- 1361981468480744576
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- NII論文ID
- 30022679166
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- ISSN
- 15244563
- 0194911X
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- データソース種別
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