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Title
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Parsing the components of the psychomotor syndrome in schizophrenia
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Author
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Abstract
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| Docx L, Morrens M, Bervoets C, Hulstijn W, Fransen E, De Hert M, Baeken C, Audenaert K, Sabbe B. Parsing the components of the psychomotor syndrome in schizophrenia. Objective: Catatonia, extrapyramidal signs, psychomotor slowing, and (motoric) neurological soft signs are well-known psychomotor symptoms in schizophrenia. This study aims at investigating the interrelations between these symptoms. In addition, associations between psychomotor symptoms, clinical symptoms, and cognitive functioning will be studied. Method: An extensive test battery containing psychomotor (Bush Francis Catatonia Rating Scale; St Hans Rating Scale; Salpetriere Retardation Rating Scale; Neurological Evaluation Scale) and clinical (Positive and Negative Syndrome Scale; Calgary Depression Scale) rating scales as well as instrumental psychomotor tests (Line Copying Task; Finger Tapping Task) and cognitive tasks (Symbol Digit Substitution Test; Stroop Colour Word Test; Continuous Performance Test; Letter Number Sequencing) was administered to a sample of 124 patients with schizophrenia or schizoaffective disorder. Results: Correlational analyses showed that two clusters emerge from our data: first, a psychomotor poverty cluster referring to the interrelations between catatonia, parkinsonism, psychomotor slowing, and negative symptoms; second, a cluster containing motoric neurological soft signs, which were found to be correlated with cognitive functioning. Conclusion: Psychomotor abnormalities are highly prevalent phenomena in schizophrenia that have to be considered as a heterogeneous construct. However, longitudinal and neurobiological research is needed to further explore the precise nature of the interrelations found in this study. |
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Language
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English
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Source (journal)
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Acta psychiatrica Scandinavica. - Copenhagen
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Publication
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Copenhagen
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2012
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ISSN
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0001-690X
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DOI
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10.1111/J.1600-0447.2012.01846.X
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Volume/pages
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126
:4
(2012)
, p. 256-265
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ISI
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000308872900005
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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