Eye movements and the perceptual span in disordered reading: A comparison of schizophrenia and dyslexia
Increasing evidence of a common neurodevelopmental etiology between schizophrenia and developmental dyslexia suggests that neurocognitive functions, such as reading, may be similarly disrupted. However, direct comparisons of reading performance in these disorders have yet to be conducted. To address...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Schizophrenia Research: Cognition |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2215001323000124 |
| _version_ | 1797647558793756672 |
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| author | Veronica Whitford Narissa Byers Gillian A. O'Driscoll Debra Titone |
| author_facet | Veronica Whitford Narissa Byers Gillian A. O'Driscoll Debra Titone |
| author_sort | Veronica Whitford |
| collection | DOAJ |
| description | Increasing evidence of a common neurodevelopmental etiology between schizophrenia and developmental dyslexia suggests that neurocognitive functions, such as reading, may be similarly disrupted. However, direct comparisons of reading performance in these disorders have yet to be conducted. To address this gap in the literature, we employed a gaze-contingent moving window paradigm to examine sentence-level reading fluency and perceptual span (breadth of parafoveal processing) in adults with schizophrenia (dataset from Whitford et al., 2013) and psychiatrically healthy adults with dyslexia (newly collected dataset). We found that the schizophrenia and dyslexia groups exhibited similar reductions in sentence-level reading fluency (e.g., slower reading rates, more regressions) compared to matched controls. Similar reductions were also found for standardized language/reading and executive functioning measures. However, despite these reductions, the dyslexia group exhibited a larger perceptual span (greater parafoveal processing) than the schizophrenia group, potentially reflecting a disruption in normal foveal-parafoveal processing dynamics. Taken together, our findings suggest that reading and reading-related functions are largely similarly disrupted in schizophrenia and dyslexia, providing additional support for a common neurodevelopmental etiology. |
| first_indexed | 2024-03-11T15:19:15Z |
| format | Article |
| id | doaj.art-860e32675d734ffc80b2f260cca03502 |
| institution | Directory Open Access Journal |
| issn | 2215-0013 |
| language | English |
| last_indexed | 2024-03-11T15:19:15Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Schizophrenia Research: Cognition |
| spelling | doaj.art-860e32675d734ffc80b2f260cca035022023-10-29T04:19:54ZengElsevierSchizophrenia Research: Cognition2215-00132023-12-0134100289Eye movements and the perceptual span in disordered reading: A comparison of schizophrenia and dyslexiaVeronica Whitford0Narissa Byers1Gillian A. O'Driscoll2Debra Titone3Department of Psychology, University of New Brunswick, 38 Dineen Drive, Fredericton, New Brunswick, E3B 5A3, Canada; Corresponding author.Department of Psychology, University of New Brunswick, 38 Dineen Drive, Fredericton, New Brunswick, E3B 5A3, CanadaDepartment of Psychology, McGill University, 2001 Avenue McGill College, Montréal, Québec, H3A 1G1, Canada; Department of Psychiatry, McGill University, 1003 Avenue des Pins Ouest, Montréal, Québec, H3A 1A1, Canada; Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Verdun, Québec, H4H 1R3, Canada; Montreal Neurological Institute and Hospital, 3801 Rue University, Montréal, Québec, H3A 2B4, Canada; Department of Neurology & Neurosurgery, McGill University, 1003 Avenue des Pins Ouest, Montréal, Québec, H3A 1A1, CanadaDepartment of Psychology, McGill University, 2001 Avenue McGill College, Montréal, Québec, H3A 1G1, Canada; Centre for Research on Brain, Language and Music, 3640 Rue de la Montagne, Montréal, Québec, H3G 2A8, CanadaIncreasing evidence of a common neurodevelopmental etiology between schizophrenia and developmental dyslexia suggests that neurocognitive functions, such as reading, may be similarly disrupted. However, direct comparisons of reading performance in these disorders have yet to be conducted. To address this gap in the literature, we employed a gaze-contingent moving window paradigm to examine sentence-level reading fluency and perceptual span (breadth of parafoveal processing) in adults with schizophrenia (dataset from Whitford et al., 2013) and psychiatrically healthy adults with dyslexia (newly collected dataset). We found that the schizophrenia and dyslexia groups exhibited similar reductions in sentence-level reading fluency (e.g., slower reading rates, more regressions) compared to matched controls. Similar reductions were also found for standardized language/reading and executive functioning measures. However, despite these reductions, the dyslexia group exhibited a larger perceptual span (greater parafoveal processing) than the schizophrenia group, potentially reflecting a disruption in normal foveal-parafoveal processing dynamics. Taken together, our findings suggest that reading and reading-related functions are largely similarly disrupted in schizophrenia and dyslexia, providing additional support for a common neurodevelopmental etiology.http://www.sciencedirect.com/science/article/pii/S2215001323000124ReadingEye movementsPerceptual spanSchizophreniaDyslexia |
| spellingShingle | Veronica Whitford Narissa Byers Gillian A. O'Driscoll Debra Titone Eye movements and the perceptual span in disordered reading: A comparison of schizophrenia and dyslexia Schizophrenia Research: Cognition Reading Eye movements Perceptual span Schizophrenia Dyslexia |
| title | Eye movements and the perceptual span in disordered reading: A comparison of schizophrenia and dyslexia |
| title_full | Eye movements and the perceptual span in disordered reading: A comparison of schizophrenia and dyslexia |
| title_fullStr | Eye movements and the perceptual span in disordered reading: A comparison of schizophrenia and dyslexia |
| title_full_unstemmed | Eye movements and the perceptual span in disordered reading: A comparison of schizophrenia and dyslexia |
| title_short | Eye movements and the perceptual span in disordered reading: A comparison of schizophrenia and dyslexia |
| title_sort | eye movements and the perceptual span in disordered reading a comparison of schizophrenia and dyslexia |
| topic | Reading Eye movements Perceptual span Schizophrenia Dyslexia |
| url | http://www.sciencedirect.com/science/article/pii/S2215001323000124 |
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