Upright Posture Impairs Cognition

Marvin Medow, PhD, and colleagues at New York Medical College conducted cognitMedow-and-Stewart-300x212ive tests during tilt table testing and made other circulatory measures of brain blood flow on 25 CFS patients with POTS and 20 healthy control subjects. “Overall, our data show that blood flow fails to increase during [cognitive] tasking for all [levels of difficulty], with clear reductions in task-dependent neuronal activated cerebral blood flow velocity as the orthostatic stress increases.” In control subjects, progressive tasking difficulty enhances blood flow. This study was funded in part by the Solve ME/CFS Initiative. (American Journal of Physiology – Heart and Circulatory Physiology, Dec. 16, 2011; abstract only)

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