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- W2888408026 abstract "Abstract Background People with schizophrenia process language in unusual ways, but the causes of these abnormalities are unclear. In particular, it has proven difficult to empirically disentangle explanations based on impairments in the top-down processing of higher level information from those based on the bottom-up processing of lower level information. Methods To distinguish these accounts, we used visual-world eye tracking, a paradigm that measures spoken language processing during real-world interactions. Participants listened to and then acted out syntactically ambiguous spoken instructions (e.g. ‘ tickle the frog with the feather ’, which could either specify how to tickle a frog, or which frog to tickle). We contrasted how 24 people with schizophrenia and 24 demographically matched controls used two types of lower level information (prosody and lexical representations) and two types of higher level information (pragmatic and discourse-level representations) to resolve the ambiguous meanings of these instructions. Eye tracking allowed us to assess how participants arrived at their interpretation in real time, while recordings of participants’ actions measured how they ultimately interpreted the instructions. Results We found a striking dissociation in participants’ eye movements: the two groups were similarly adept at using lower level information to immediately constrain their interpretations of the instructions, but only controls showed evidence of fast top-down use of higher level information. People with schizophrenia, nonetheless, did eventually reach the same interpretations as controls. Conclusions These data suggest that language abnormalities in schizophrenia partially result from a failure to use higher level information in a top-down fashion, to constrain the interpretation of language as it unfolds in real time." @default.
- W2888408026 created "2018-08-31" @default.
- W2888408026 creator A5033805188 @default.
- W2888408026 creator A5058432383 @default.
- W2888408026 creator A5061655704 @default.
- W2888408026 creator A5064220364 @default.
- W2888408026 date "2018-08-22" @default.
- W2888408026 modified "2023-10-11" @default.
- W2888408026 title "Spared bottom-up but impaired top-down interactive effects during naturalistic language processing in schizophrenia: evidence from the visual-world paradigm" @default.
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- W2888408026 doi "https://doi.org/10.1017/s0033291718001952" @default.
- W2888408026 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6386628" @default.
- W2888408026 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30131083" @default.
- W2888408026 hasPublicationYear "2018" @default.
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