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An orthographic prediction error as the basis for efficient visual word recognition
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In: Neuroimage (2020)
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Abstract:
Most current models assume that the perceptual and cognitive processes of visual word recognition and reading operate upon neuronally coded domain-general low-level visual representations – typically oriented line representations. We here demonstrate, consistent with neurophysiological theories of Bayesian-like predictive neural computations, that prior visual knowledge of words may be utilized to ‘explain away’ redundant and highly expected parts of the visual percept. Subsequent processing stages, accordingly, operate upon an optimized representation of the visual input, the orthographic prediction error, highlighting only the visual information relevant for word identification. We show that this optimized representation is related to orthographic word characteristics, accounts for word recognition behavior, and is processed early in the visual processing stream, i.e., in V4 and before 200 ms after word-onset. Based on these findings, we propose that prior visual-orthographic knowledge is used to optimize the representation of visually presented words, which in turn allows for highly efficient reading processes.
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Article
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URL: https://doi.org/10.1016/j.neuroimage.2020.116727 http://www.ncbi.nlm.nih.gov/pubmed/32173410 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7284316/
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A model-guided dissociation between subcortical and cortical contributions to word recognition
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Possible roles for fronto-striatal circuits in reading disorder
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Visual Experience Shapes Orthographic Representations in the Visual Word Form Area
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The neural bases of the pseudohomophone effect : Phonological constraints on lexico-semantic access in reading
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In: Neuroscience ; 295 (2015). - S. 151-163. - ISSN 0306-4522. - eISSN 1873-7544 (2015)
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Functional neuroanatomy of developmental dyslexia: the role of orthographic depth
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Developmental dyslexia: dysfunction of a left hemisphere reading network
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A dual-route perspective on poor reading in a regular orthography: An fMRI study
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A Dual-Route Perspective on Brain Activation in Response to Visual Words: Evidence for a Length by Lexicality Interaction in the Visual Word Form Area (VWFA)
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On the functional neuroanatomy of visual word processing: Effects of case and letter deviance
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