Journal article

Brain activation associated with ratings of the hedonic component of thermal sensation during whole-body warming and cooling

Michael J Farrell, John Johnson, Robin McAllen, Frank Zamarripa, Derek A Denton, Peter T Fox, Gary F Egan

JOURNAL OF THERMAL BIOLOGY | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2011

Abstract

Thermal sensation has both discriminative and hedonic components. The neural network associated with thermal discrimination has been described, but the representation of the hedonic component of thermal sensation in the brain has yet to be demonstrated. This study measured regional cerebral blood flow (rCBF) with Positron Emission Tomography in human participants during whole-body cooling and warming. Ratings of the hedonic dimension of thermal sensation were correlated with rCBF and compared to brain activation maps of skin and core temperature changes. The hedonic dimension of thermal sensation was represented in a widely distributed network that included somatosensory, limbic, paralimbic,..

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