Learning to Read Increases the Informativeness of Distributed Ventral Temporal Responses

Cerebral Cortex
Marisa NordtKalanit Grill-Spector

Abstract

Becoming a proficient reader requires substantial learning over many years. However, it is unknown how learning to read affects development of distributed visual representations across human ventral temporal cortex (VTC). Using fMRI and a data-driven, computational approach, we quantified the development of distributed VTC responses to characters (pseudowords and numbers) versus other domains in children, preteens, and adults. Results reveal anatomical- and hemisphere-specific development. With development, distributed responses to words and characters became more distinctive and informative in lateral but not medial VTC, and in the left but not right hemisphere. While the development of voxels with both positive and negative preference to words affected distributed information, only development of voxels with positive preference to words (i.e., word-selective) was correlated with reading ability. These data show that developmental increases in informativeness of distributed left lateral VTC responses are related to proficient reading and have important implications for both developmental theories and for elucidating neural mechanisms of reading disabilities.

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Citations

Sep 25, 2019·Proceedings of the National Academy of Sciences of the United States of America·Vaidehi S NatuKalanit Grill-Spector
Jun 19, 2021·Nature Human Behaviour·Marisa NordtKalanit Grill-Spector
Aug 5, 2021·Annual Review of Vision Science·Alice J O'Toole, Carlos D Castillo

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