Articles by author - Toru Koyama

Paradoxical surge of corticotropin after glucocorticoid replacement in central adrenal insufficiency.

Yamashita K, Doden T, Tanaka M, Funase Y, Yamauchi K, Furukawa T, Oguchi K, Koyama T, Aizawa T.

Case Reports 2012; 33(2): 113-117 PubMed PMID: 22592190  Keywords:  Adrenal Insufficiency:blood, Adrenocorticotropic Hormone:blood, Aged, Glucocorticoids:pharmacology, Humans, Hydrocortisone:pharmacology, Male, Pituitary Gland, Anterior:drug effects,.    Citation

: A 78-yr-old man was admitted in emergency with fatigue, anorexia, vomiting, hypothermia (35.1 °C on a hot August day), hypotension (89/.....

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Depressive patients are more impulsive and inconsistent in intertemporal choice behavior for monetary gain and loss than healthy subjects--an analysis based on Tsallis' statistics.

Takahashi T, Oono H, Inoue T, Boku S, Kako Y, Kitaichi Y, Kusumi I, Masui T, Nakagawa S, Suzuki K, Tanaka T, Koyama T, Radford M.

Journal Article 2008; 29(3): 351-358 PubMed PMID: 18580849  Keywords:  Adult, Aged, Choice Behavior:physiology, Data Interpretation, Statistical, Depressive Disorder:psychology, Economics, Female, Humans, Impulsive Behavior:psychology, Male, Middle Aged, Neuropsychological Tests, Psychiatric Status Rating Scales, Reward, Ser.    Citation

OBJECTIVES: Depression has been associated with impaired neural processing of reward and punishment. However, to date, little is known reg.....

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