Published online before print
November 1, 2006, 10.1097/01.psy.0000242120.91030.d8
Hypothalamic Blood Flow Correlates Positively With Stress-Induced Cortisol Levels in Subjects With Social Anxiety Disorder
Fredrik Åhs, MS,
Tomas Furmark, PhD,
Åsa Michelgård, MS,
Bengt Långström, PhD,
Lieuwe Appel, PhD,
Oliver T. Wolf, PhD,
Clemens Kirschbaum, PhD and
Mats Fredrikson, PhD
From the Departments of Psychology (F.Å., T.F., M.F.) and Neuroscience (Å.M.), Uppsala University, Uppsala, Sweden; Uppsala Imanet AB (B.L., L.A.), Uppsala, Sweden; the Department of Psychology (O.T.W.), University of Bielefeld, Bielefeld, Germany; and Biopsychology (C.K.), Technical University of Dresden, Dresden, Germany.

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Figure 1. A scatter plot of mean salivary cortisol levels from after the two speeches and mean hypothalamic regional cerebral blood flow (rCBF) during the two speeches showing a positive correlation (r = 0.68, p = .014) consistent with an excitatory influence of hypothalamic activity on cortisol excretion.
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Figure 2. Sagittal images from the exploratory analysis illustrating a positive covariation (A) between stress induced salivary cortisol levels and regional cerebral blood flow in a midbrain cluster ranging from the thalamus to the hypothalamus and extending into the brain stem pons. A negative covariation (B) was observed in the medial prefrontal cortex (Brodmann areas 9, 10, and 32) and in the motor and premotor cortices (Brodmann areas 4 and 6).
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Copyright © 2006 by the American Psychosomatic Society