Body temperature and oxygenation levels significantly affect human cognitive ability
Body temperature and oxygenation levels significantly influence human cognitive performance, as evidenced by studies showing that thermal stress and hypoxia alter executive function, reaction times, and working memory.
The retrieved literature consistently supports the claim that physiological stressors such as altered oxygenation and thermal stress impact cognitive functions like executive control, working memory, and processing speed. Papers 0, 2, and 4 provide direct experimental and clinical evidence linking temperature and oxygen variations to cognitive changes. No papers refute the claim.
Herrera-Ospina E, Ramirez-Jr E, Bailey R, Stiles ST, Ojikutu QA, Viswanath SC, Steinhubl SR, Kao SC, Roseguini BT, Fernandes IA. Does a pharmacologically driven elevation in cerebral blood flow modulate cognition during combined hypoxic and thermal stress?. 2026. https://doi.org/10.1152/japplphysiol.00414.2026
Paper 0 demonstrates that hypoxia and thermal stress significantly affect human processing speed and response variability during executive function tasks.
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Almulhem MM, Siraj RA. Cognitive Impairment as a Putative Mechanism of Self-Management Failure in Chronic Obstructive Pulmonary Disease: A Conceptual Narrative Review.. 2026. https://doi.org/10.3390/jcm15093550
Paper 2 links chronic hypoxaemia and physiological stress to marked neurocognitive vulnerabilities and deficits in executive function, working memory, and processing speed.
Boulares A, Faucher C, Gimenes M, Theurot D, Pichon A, Dupuy O. Graded normobaric hypoxia alters cerebral oxygenation and cognition in middle-aged adults: a single-blind counterbalanced randomized crossover trial.. 2026. https://doi.org/10.1007/s11357-026-02187-x
Paper 4 shows that graded normobaric hypoxia alters prefrontal oxygenation and leads to measurable declines in executive function and working memory as oxygen levels drop.
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