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- W113803568 abstract "Regional tissue temperature dynamics in the brain are determined by the balance of the metabolic heat production rate and heat exchange with blood flowing through capillaries embedded in the brain tissue, the surrounding tissues and the environment. Local changes in blood flow and metabolism during functional activity can upset this balance and induce transient temperature changes. Invasive experimental studies in animal models have established that the brain temperature changes during functional activity are observable and a definitive relationship exists between temperature and brain activity. We present a theoretical framework that links tissue temperature dynamics with hemodynamic activity allowing us to non-invasively estimate brain temperature changes from experimentally measured bloodoxygen level dependent (BOLD) signals. With this unified approach, we are able to pinpoint the mechanisms for hemodynamic activity-related temperature increases and decreases. In addition to these results, the potential uses and limitations of optical measurements are discussed. INDEX WORDS: Functional magnetic resonance imaging, Blood oxygen level dependent, Brain temperature, Functional near-infrared spectroscopy Brain tissue temperature dynamics during functional activity and possibilities for optical measurement techniques" @default.
- W113803568 created "2016-06-24" @default.
- W113803568 creator A5033273960 @default.
- W113803568 date "2012-01-01" @default.
- W113803568 modified "2023-09-27" @default.
- W113803568 title "Brain tissue temperature dynamics during functional activity and possibilities for optical measurement techniques" @default.
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