Spatial serial order processing in schizophrenia
| Autor: | Daniel Yohanna, Gina Clark, David Fraser, Sohee Park, James C. Houk |
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| Rok vydání: | 2004 |
| Předmět: |
Adult
Male Psychosis medicine.medical_specialty Fixation Ocular Audiology Severity of Illness Index Task (project management) medicine Humans Memory disorder Biological Psychiatry Memory errors Working memory Cognitive disorder medicine.disease Diagnostic and Statistical Manual of Mental Disorders Psychiatry and Mental health Schizophrenia Space Perception Order processing Female Cognition Disorders Psychology Cognitive psychology |
| Zdroj: | Schizophrenia Research. 70:203-213 |
| ISSN: | 0920-9964 |
| DOI: | 10.1016/j.schres.2003.09.019 |
| Popis: | The aim of this study was to examine serial order processing deficits in 21 schizophrenia patients and 16 age- and education-matched healthy controls. In a spatial serial order working memory task, one to four spatial targets were presented in a randomized sequence. Subjects were required to remember the locations and the order in which the targets were presented. Patients showed a marked deficit in ability to remember the sequences compared with controls. Increasing the number of targets within a sequence resulted in poorer memory performance for both control and schizophrenia subjects, but the effect was much more pronounced in the patients. Targets presented at the end of a long sequence were more vulnerable to memory error in schizophrenia patients. Performance deficits were not attributable to motor errors, but to errors in target choice. The results support the idea that the memory errors seen in schizophrenia patients may be due to saturating the working memory network at relatively low levels of memory load. |
| Databáze: | OpenAIRE |
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