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Three questions to the human brain

NIELS H. SECHER ; Department of Anesthesia, Rigshospitalet 2041, Blegdamsvej 9, DK-2100 Copenhagen Ø, Denmark

Puni tekst: engleski, pdf (590 KB) str. 9-14 preuzimanja: 295* citiraj
APA 6th Edition
SECHER, N.H. (2014). Three questions to the human brain. Periodicum biologorum, 116 (1), 9-14. Preuzeto s https://hrcak.srce.hr/125483
MLA 8th Edition
SECHER, NIELS H.. "Three questions to the human brain." Periodicum biologorum, vol. 116, br. 1, 2014, str. 9-14. https://hrcak.srce.hr/125483. Citirano 18.09.2021.
Chicago 17th Edition
SECHER, NIELS H.. "Three questions to the human brain." Periodicum biologorum 116, br. 1 (2014): 9-14. https://hrcak.srce.hr/125483
Harvard
SECHER, N.H. (2014). 'Three questions to the human brain', Periodicum biologorum, 116(1), str. 9-14. Preuzeto s: https://hrcak.srce.hr/125483 (Datum pristupa: 18.09.2021.)
Vancouver
SECHER NH. Three questions to the human brain. Periodicum biologorum [Internet]. 2014 [pristupljeno 18.09.2021.];116(1):9-14. Dostupno na: https://hrcak.srce.hr/125483
IEEE
N.H. SECHER, "Three questions to the human brain", Periodicum biologorum, vol.116, br. 1, str. 9-14, 2014. [Online]. Dostupno na: https://hrcak.srce.hr/125483. [Citirano: 18.09.2021.]

Sažetak
An approximately 20% increase in cerebral blood flow (CBF) and the
cerebral metabolic rate for oxygen manifest during whole body exercise with determination of brain tissue flow and arterial inflow to the brain. Yet, during intense exercise CBF approaches the resting level in response to the decrease in arterial carbon dioxide tension with the exponential increase in ventilation. Here it is illustrated that the increase in CBF during exercise appears to depend to the ability to raise cardiac output and it is speculated whether there is a sympathetic restrain on CBF when the increase in cardiac output is small. Furthermore, it is considered whether the restrain in CBF during intense exercise affects cerebral oxygenation to an extent that it provokes so-called central fatigue. Finally it is highlighted that the cerebral activation associated with exercise provokes uptake of carbohydrate, notably of lactate, that cannot be accounted for by the concomitant increase in the cerebral metabolic rate for oxygen and it is pointed out that it remains
unknown why that apparently surplus carbohydrate uptake by the brain is in need.

Ključne riječi
Cerebral blood flow; cerebral metabolic; rate for oxygen; cerebral oxygenation; fatigue

Hrčak ID: 125483

URI
https://hrcak.srce.hr/125483

Posjeta: 477 *