No evidence for prolonged visible persistence in patients with schizophrenia.
BACKGROUND: Temporal visual processing is strongly deteriorated in patients with schizophrenia. For example, the interval required between a visual stimulus and a subsequent mask has to be much longer in schizophrenic patients than in healthy controls. We investigated whether this deficit in tempora...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2013-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3594201?pdf=render |
| _version_ | 1818911580762406912 |
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| author | Cathleen Grimsen Andreas Brand Manfred Fahle |
| author_facet | Cathleen Grimsen Andreas Brand Manfred Fahle |
| author_sort | Cathleen Grimsen |
| collection | DOAJ |
| description | BACKGROUND: Temporal visual processing is strongly deteriorated in patients with schizophrenia. For example, the interval required between a visual stimulus and a subsequent mask has to be much longer in schizophrenic patients than in healthy controls. We investigated whether this deficit in temporal resolution is accompanied by prolonged visual persistence and/or deficient temporal precision (temporal asynchrony perception). METHODOLOGY/PRINCIPAL FINDINGS: We investigated visual persistence in three experiments. In the first, measuring temporal processing by so-called backward masking, prolonged visible persistence is supposed to decrease performance. In the second experiment, requiring temporal integration, prolonged persistence is supposed to improve performance. In the third experiment, we investigated asynchrony detection, as another measure of temporal resolution. Eighteen patients with schizophrenia and 15 healthy controls participated. Asynchrony detection was intact in the patients. However, patients' performance was inferior compared to healthy controls in the first two experiments. Hence, temporal processing in schizophrenic patients is indeed significantly impaired but this impairment is not caused by prolonged temporal integration. CONCLUSIONS/SIGNIFICANCE: Our results argue against a generally prolonged visual persistence in patients with schizophrenia. Together with the preserved ability of patients, to detect temporal asynchronies in permanently presented stimuli, the results indicate a more specific deficit in temporal processing of schizophrenic patients. |
| first_indexed | 2024-12-19T23:00:58Z |
| format | Article |
| id | doaj.art-67fc8488532f4d4994a8e892a1dbce1a |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-19T23:00:58Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-67fc8488532f4d4994a8e892a1dbce1a2022-12-21T20:02:31ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0183e5894010.1371/journal.pone.0058940No evidence for prolonged visible persistence in patients with schizophrenia.Cathleen GrimsenAndreas BrandManfred FahleBACKGROUND: Temporal visual processing is strongly deteriorated in patients with schizophrenia. For example, the interval required between a visual stimulus and a subsequent mask has to be much longer in schizophrenic patients than in healthy controls. We investigated whether this deficit in temporal resolution is accompanied by prolonged visual persistence and/or deficient temporal precision (temporal asynchrony perception). METHODOLOGY/PRINCIPAL FINDINGS: We investigated visual persistence in three experiments. In the first, measuring temporal processing by so-called backward masking, prolonged visible persistence is supposed to decrease performance. In the second experiment, requiring temporal integration, prolonged persistence is supposed to improve performance. In the third experiment, we investigated asynchrony detection, as another measure of temporal resolution. Eighteen patients with schizophrenia and 15 healthy controls participated. Asynchrony detection was intact in the patients. However, patients' performance was inferior compared to healthy controls in the first two experiments. Hence, temporal processing in schizophrenic patients is indeed significantly impaired but this impairment is not caused by prolonged temporal integration. CONCLUSIONS/SIGNIFICANCE: Our results argue against a generally prolonged visual persistence in patients with schizophrenia. Together with the preserved ability of patients, to detect temporal asynchronies in permanently presented stimuli, the results indicate a more specific deficit in temporal processing of schizophrenic patients.http://europepmc.org/articles/PMC3594201?pdf=render |
| spellingShingle | Cathleen Grimsen Andreas Brand Manfred Fahle No evidence for prolonged visible persistence in patients with schizophrenia. PLoS ONE |
| title | No evidence for prolonged visible persistence in patients with schizophrenia. |
| title_full | No evidence for prolonged visible persistence in patients with schizophrenia. |
| title_fullStr | No evidence for prolonged visible persistence in patients with schizophrenia. |
| title_full_unstemmed | No evidence for prolonged visible persistence in patients with schizophrenia. |
| title_short | No evidence for prolonged visible persistence in patients with schizophrenia. |
| title_sort | no evidence for prolonged visible persistence in patients with schizophrenia |
| url | http://europepmc.org/articles/PMC3594201?pdf=render |
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