Increased Brain Activation for Dual Tasking with 70-Days Head-Down Bed Rest
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چکیده
منابع مشابه
Increased Brain Activation for Dual Tasking with 70-Days Head-Down Bed Rest
Head-down tilt bed rest (HDBR) has been used as a spaceflight analog to simulate the effects of microgravity exposure on human physiology, sensorimotor function, and cognition on Earth. Previous studies have reported that concurrent performance of motor and cognitive tasks can be impaired during space missions. Understanding the consequences of HDBR for neural control of dual tasking may possib...
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BACKGROUND Adverse effects of spaceflight on sensorimotor function have been linked to altered somatosensory and vestibular inputs in the microgravity environment. Whether these spaceflight sequelae have a central nervous system component is unknown. However, experimental studies have shown spaceflight-induced brain structural changes in rodents' sensorimotor brain regions. Understanding the ne...
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This study tested the hypothesis that head-down tilt bed rest (HDBR) reduces adrenergic and nonadrenergic cutaneous vasoconstrictor responsiveness. Additionally, an exercise countermeasure group was included to identify whether exercise during bed rest might counteract any vasoconstrictor deficits that arose during HDBR. Twenty-two subjects underwent 14 days of strict 6 degrees HDBR. Eight of t...
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Hemoconcentration is observed in bed rest studies, descent from altitude, and exposure to microgravity. Hemoconcentration triggers erythrocyte losses to subsequently normalize erythrocyte concentration. The mechanisms of erythrocyte loss may involve enhanced hemolysis, but has never been measured directly in bed rest studies. Steady-state hemolysis was evaluated by measuring two heme degradatio...
متن کاملBaroreflex control of muscle sympathetic nerve activity after 120 days of 6° head-down bed rest
Kamiya, Atsunori, Satoshi Iwase, Hiroki Kitazawa, Tadaaki Mano, Olga L. Vinogradova, and Irina B. Kharchenko. Baroreflex control of muscle sympathetic nerve activity after 120 days of 6° head-down bed rest. Am. J. Physiol. Regulatory Integrative Comp. Physiol. 278: R445– R452, 2000.—To examine how long-lasting microgravity simulated by 6° head-down bed rest (HDBR) induces changes in the baroref...
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ژورنال
عنوان ژورنال: Frontiers in Systems Neuroscience
سال: 2016
ISSN: 1662-5137
DOI: 10.3389/fnsys.2016.00071