Tyrosine supplementation mitigates working memory decrements during cold exposure

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Tyrosine supplementation mitigates working memory decrements during cold exposure.

In rats, dietary supplementation with the amino acid tyrosine (TYR) prevents depletion of central catecholamines observed during acute environmental stress. Concomitant changes in the animals' behavioral responses to stress suggest that TYR might have similar effects on central catecholamines and cognition in humans exposed to environmental stress. This study aimed to determine if severe cold e...

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Tyrosine reverses a cold-induced working memory deficit in humans.

Acute exposure to cold stress has been shown to impair short-term, or working, memory, which may be related to reduction in, or disruption of, sustained release of brain catecholamines. Administering a supplemental dose of the catecholamine precursor tyrosine may alleviate cold stress-induced memory impairments by preventing cold-induced deficits in brain catecholamine levels. The present exper...

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ژورنال

عنوان ژورنال: Physiology & Behavior

سال: 2007

ISSN: 0031-9384

DOI: 10.1016/j.physbeh.2007.05.003