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Decoding the information structure underlying the neural representation of concepts
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In: Proc Natl Acad Sci U S A (2022)
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Deep Artificial Neural Networks Reveal a Distributed Cortical Network Encoding Propositional Sentence-Level Meaning
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In: J Neurosci (2021)
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Differential Activation of the Visual Word Form Area During Auditory Phoneme Perception in Youth with Dyslexia
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In: Neuropsychologia (2020)
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An Integrated Neural Decoder of Linguistic and Experiential Meaning
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Lesion localization of speech comprehension deficits in chronic aphasia
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The Relationship Between Maternal Education and the Neural Substrates of Phoneme Perception in Children: Interactions Between Socioeconomic Status and Proficiency Level
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Surface Errors Without Semantic Impairment in Acquired Dyslexia: A Voxel-Based Lesion-Symptom Mapping Study ...
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Heteromodal Cortical Areas Encode Sensory-Motor Features of Word Meaning
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Abstract:
The capacity to process information in conceptual form is a fundamental aspect of human cognition, yet little is known about how this type of information is encoded in the brain. Although the role of sensory and motor cortical areas has been a focus of recent debate, neuroimaging studies of concept representation consistently implicate a network of heteromodal areas that seem to support concept retrieval in general rather than knowledge related to any particular sensory-motor content. We used predictive machine learning on fMRI data to investigate the hypothesis that cortical areas in this “general semantic network” (GSN) encode multimodal information derived from basic sensory-motor processes, possibly functioning as convergence–divergence zones for distributed concept representation. An encoding model based on five conceptual attributes directly related to sensory-motor experience (sound, color, shape, manipulability, and visual motion) was used to predict brain activation patterns associated with individual lexical concepts in a semantic decision task. When the analysis was restricted to voxels in the GSN, the model was able to identify the activation patterns corresponding to individual concrete concepts significantly above chance. In contrast, a model based on five perceptual attributes of the word form performed at chance level. This pattern was reversed when the analysis was restricted to areas involved in the perceptual analysis of written word forms. These results indicate that heteromodal areas involved in semantic processing encode information about the relative importance of different sensory-motor attributes of concepts, possibly by storing particular combinations of sensory and motor features.
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Keyword:
Brief Communications
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5030346/ http://www.ncbi.nlm.nih.gov/pubmed/27656016 https://doi.org/10.1523/JNEUROSCI.4095-15.2016
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Predicting brain activation patterns associated with individual lexical concepts based on five sensory-motor attributes
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Cerebral Localization of Impaired Phonological Retrieval During Rhyme Judgment
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Anatomy is strategy: Skilled reading differences associated with structural connectivity differences in the reading network
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FMRI of Phonemic Perception and Its Relationship to Reading Development in Elementary- to Middle-School-Age Children
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The Role of Left Occipitotemporal Cortex in Reading: Reconciling Stimulus, Task, and Lexicality Effects
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Perceptual demand modulates activation of human auditory cortex in response to task-irrelevant sounds
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The Role of Left Occipitotemporal Cortex in Reading: Reconciling Stimulus, Task, and Lexicality Effects
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