고려대학교

초록/요약

Objectives : A lot of studies have suggested evidences that psychotic depression is different from nonpsychotic depression in many aspects. Hence, the authors compared clinical variables and neuropsychological features of psychotic depression to those of non psychotic depression and schizophrenia in order to find out whether psychotic depression is classified by the different diagnostic category to nonpsychoticdepression. Methods : We examined the neuropsychological features of 24 nonpsychotic depression patients, 25 psychotic depression patients, and 49 schizophrenia patients. The neuropsychological tests that we made comprise digit symbol test, trail-making lest A, trail-making test B, finger tapping test, continuous visual performance test, spatial memory test, and Wisconsin card sorting test. Results : 1) Mean score of digit symbol test and trail making test A in nonpsychotic depression group is statistically higher than in schizophrenia group. 2) Nonpsychotic depression group showed statistically higher accuracy than xhizophrenia group and psychotic depression group showed similar result with schizophrenia group in continuous visual performance test. 3) Schizophrenia group showed statistically lower rates of accurate responses than the other two groups in spatial memory test. 4) Nonpsychotic depression group showed better performances than the other two groups and psychotic depression group showed no significant difference with schizophrenia in correct total score, error total score, and completed categories score for Wisconsin card sorting test. Conclusions : Above results show that frontal dysfunction might be appeared in psychotic depression. Therefore, we suggest that psychotic depression might be distinguished from nonpsychotic depression