Schmitt, J A Tryptophan depletion impairs memory consolidation but improves focussed attention in healthy young volunteers. [electronic resource] - Journal of psychopharmacology (Oxford, England) Mar 2000 - 21-9 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0269-8811 Standard No.: 10.1177/026988110001400102 doi Subjects--Topical Terms: AdultAffect--physiologyAmino Acids--administration & dosageAttention--physiologyCross-Over StudiesDouble-Blind MethodFemaleHumansMaleMental Recall--physiologyNeuropsychological TestsProblem Solving--physiologyPsychomotor Performance--physiologyRetention, Psychology--physiologySerotonin--physiologyTryptophan--deficiencyVerbal Learning--physiology