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  Examining motion speed processing in schizophrenia using the flash lag illusion

Kaliuzhna, M., Stein, T., Sterzer, P., & Seymour, K. (2020). Examining motion speed processing in schizophrenia using the flash lag illusion. Schizophrenia Research: Cognition, 19: 100165, pp. 1-6. doi:10.1016/j.scog.2019.100165.

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Kaliuzhna, M, Author
Stein, T, Author
Sterzer, P, Author
Seymour, KJ1, Author              
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1External Organizations, ou_persistent22              

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 Abstract: Research on visual perception in schizophrenia suggests a deficit in motion processing. Specifically, difficulties with discriminating motion speed are commonly reported. However, speed discrimination tasks typically require participants to make judgments about the difference between two stimuli in a two-interval forced choice (2IFC) task. Such tasks not only tap into speed processing mechanisms, but also rely on higher executive functioning including working memory and attention which has been shown to be compromised in schizophrenia. We used the Flash Lag illusion to examine speed processing in patients with schizophrenia. Based on previous research showing a strong dependence between motion speed and the illusion magnitude, we expected a deficit in speed processing to alter this relationship. A motion processing deficit in patients would also predict overall reductions in perceived lag. We found the magnitude and speed dependence of the Flash Lag illusion to be similar in patients and controls. Together, the findings suggest no general abnormality in motion speed processing in schizophrenia.

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 Dates: 2020-03
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1016/j.scog.2019.100165
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Title: Schizophrenia Research: Cognition
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 19 Sequence Number: 100165 Start / End Page: 1 - 6 Identifier: ISSN: 2215-0013
CoNE: https://pure.mpg.de/cone/journals/resource/2215-0013