COMPOSITION FOR IMPROVING BRAIN FUNCTION AND METHOD FOR IMPROVING BRAIN FUNCTIONAbstractProvided are a composition for improving the brain function, which can be orally taken at a low dose, and a method therefor. The composition for improving the brain function contains, as the active ingredient,X-Pro-Pro-Leu-Thr-Gln-Thr-Pro-Val-Val-Val-Pro-Pro-Phe-Leu-Gln-Pro-Glu-Y (wherein X is nil or represents Ile or Asn-lle and Y is nil or represents Val-Met), X-Val-Val-Val-Pro-Pro-Phe-Leu-Gln-Pro-Glu-Y (wherein X is abscent or represents Thr-Gln-Thr-Pro, Pro-Leu-Thr-Gln-Thr-Pro, Leu-Thr-Gln-Thr-Pro or Pro and Y is abscent or represents Val-Met), or a salt of the same. The methodfor improving the brain function comprises administering said peptide or a salt of the same.FIG.6°CONTROL GROUPSCOPOLAMINE CONTROL GROUPPLIDTPVVVPPFLOPE(500nmol/kOGROUP tifi LTUTPVVVPPFLOPE(500nmol/kOGROUP PVVVPPFLOPE(500nmol/kg)GROUPVVVPPFLOPE(500nmo1/kO0R0UP **po.oi vsCONTROL GROUP (STUDENT St—TEST)# P<0.05, t P<0.I vsSCOPOLAMINE CONTROL GROUP (STUDENT St—TEST)