A test of possible cognitive and environ
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S. E. Smith; R. O. Pihl; S. N. Young; F. R. Ervin
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Article
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1987
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Springer
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English
โ 911 KB
In a previous study we found that a tryptophan-deficient amino acid mixture, designed to lower tissue tryptophan and thus brain 5-hydroxytryptamine (5HT) levels, caused a rapid (5 h) lowering of mood in normal males. Because of the importance of this evidence indicating a direct causal connection be