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Adding words to the brain's visual dictionary: novel word learning selectively sharpens orthographic representations in the VWFA

Glezer, Laurie S ; Kim, Judy ; Rule, Josh ; Jiang, Xiong ; Riesenhuber, Maximilian

The Journal of neuroscience, 2015-03, Vol.35 (12), p.4965-4972 [Periódico revisado por pares]

United States: Society for Neuroscience

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  • Título:
    Adding words to the brain's visual dictionary: novel word learning selectively sharpens orthographic representations in the VWFA
  • Autor: Glezer, Laurie S ; Kim, Judy ; Rule, Josh ; Jiang, Xiong ; Riesenhuber, Maximilian
  • Assuntos: Adolescent ; Adult ; Brain Mapping ; Female ; Humans ; Learning - physiology ; Magnetic Resonance Imaging ; Male ; Occipital Lobe - physiology ; Photic Stimulation ; Reading ; Recognition (Psychology) - physiology ; Temporal Lobe - physiology ; Visual Perception - physiology ; Vocabulary
  • É parte de: The Journal of neuroscience, 2015-03, Vol.35 (12), p.4965-4972
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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    Author contributions: L.S.G., J.K., J.R., X.J., and M.R. designed research; L.S.G., J.K., J.R., and X.J. performed research; L.S.G., J.K., and X.J. analyzed data; L.S.G., X.J., and M.R. wrote the paper.
  • Descrição: The nature of orthographic representations in the human brain is still subject of much debate. Recent reports have claimed that the visual word form area (VWFA) in left occipitotemporal cortex contains an orthographic lexicon based on neuronal representations highly selective for individual written real words (RWs). This theory predicts that learning novel words should selectively increase neural specificity for these words in the VWFA. We trained subjects to recognize novel pseudowords (PWs) and used fMRI rapid adaptation to compare neural selectivity with RWs, untrained PWs (UTPWs), and trained PWs (TPWs). Before training, PWs elicited broadly tuned responses, whereas responses to RWs indicated tight tuning. After training, TPW responses resembled those of RWs, whereas UTPWs continued to show broad tuning. This change in selectivity was specific to the VWFA. Therefore, word learning appears to selectively increase neuronal specificity for the new words in the VWFA, thereby adding these words to the brain's visual dictionary.
  • Editor: United States: Society for Neuroscience
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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