Impaired precision, but normal retention, of auditory sensory (''echoic'') memory information in schizophrenia

被引:136
作者
Javitt, DC
Strous, RD
Grochowski, S
Ritter, W
Cowan, N
机构
[1] BRONX PSYCHIAT CTR, ALBERT EINSTEIN COLL MED, DEPT PSYCHIAT, BRONX, NY 10461 USA
[2] BRONX PSYCHIAT CTR, ALBERT EINSTEIN COLL MED, DEPT NEUROSCI, BRONX, NY 10461 USA
[3] UNIV MISSOURI, DEPT PSYCHOL, COLUMBIA, MO USA
关键词
D O I
10.1037/0021-843X.106.2.315
中图分类号
B849 [应用心理学];
学科分类号
040203 ;
摘要
Working memory is the type of memory that allows one to hold information in mind while working on a task or problem. The present study investigated attention-independent auditory sensory (''echoic'') memory in 18 schizophrenic participants and 17 controls. Schizophrenic participants showed impaired delayed tone matching performance in comparison with controls. However, when groups were matched for performance at 1 s by varying the difficulty of the task across groups, schizophrenic participants showed normal retention of information as reflected in normal tone matching performance. These findings demonstrate that schizophrenic participants show working memory deficits even in extremely simple tasks and that the critical deficit in schizophrenia may be in the sensitivity of the system rather than the duration for which memory traces are retained.
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收藏
页码:315 / 324
页数:10
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