eprintid: 10080420
rev_number: 22
eprint_status: archive
userid: 608
dir: disk0/10/08/04/20
datestamp: 2019-09-04 09:47:11
lastmod: 2021-10-09 22:34:49
status_changed: 2019-09-05 13:41:16
type: article
metadata_visibility: show
creators_name: Taylor, JSH
creators_name: Davis, MH
creators_name: Rastle, K
title: Mapping visual symbols onto spoken language along the ventral visual stream
ispublished: pub
divisions: UCL
divisions: B02
divisions: C07
divisions: D05
divisions: F71
keywords: fMRI, learning, orthography, reading, representation
note: Copyright © 2019 the Author(s). Published by PNAS.
This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY) (http://creativecommons.org/licenses/by/4.0/).
abstract: Reading involves transforming arbitrary visual symbols into sounds and meanings. This study interrogated the neural representations in ventral occipitotemporal cortex (vOT) that support this transformation process. Twenty-four adults learned to read 2 sets of 24 novel words that shared phonemes and semantic categories but were written in different artificial orthographies. Following 2 wk of training, participants read the trained words while neural activity was measured with functional MRI. Representational similarity analysis on item pairs from the same orthography revealed that right vOT and posterior regions of left vOT were sensitive to basic visual similarity. Left vOT encoded letter identity and representations became more invariant to position along a posterior-to-anterior hierarchy. Item pairs that shared sounds or meanings, but were written in different orthographies with no letters in common, evoked similar neural patterns in anterior left vOT. These results reveal a hierarchical, posterior-to-anterior gradient in vOT, in which representations of letters become increasingly invariant to position and are transformed to convey spoken language information.
date: 2019-09-03
official_url: https://doi.org/10.1073/pnas.1818575116
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1684681
doi: 10.1073/pnas.1818575116
pii: 1818575116
lyricists_name: Taylor, Joanne
lyricists_id: JSHTA05
actors_name: Taylor, Joanne
actors_id: JSHTA05
actors_role: owner
full_text_status: public
publication: Proceedings of the National Academy of Sciences of the United States of America
volume: 116
number: 36
pagerange: 17723-17728
event_location: United States
issn: 1091-6490
citation:        Taylor, JSH;    Davis, MH;    Rastle, K;      (2019)    Mapping visual symbols onto spoken language along the ventral visual stream.                   Proceedings of the National Academy of Sciences of the United States of America , 116  (36)   pp. 17723-17728.    10.1073/pnas.1818575116 <https://doi.org/10.1073/pnas.1818575116>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10080420/1/1818575116.full.pdf