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A Protracted Sensitive Period Regulates the Development of Cross-Modal Sound–Shape Associations in Humans

Humans preferentially match arbitrary words containing higher- and lower-frequency phonemes to angular and smooth shapes, respectively. Here, we investigated the role of visual experience in the development of audiovisual and audiohaptic sound–shape associations (SSAs) using a unique set of five gro...

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Autores principales: Sourav, Suddha, Kekunnaya, Ramesh, Shareef, Idris, Banerjee, Seema, Bottari, Davide, Röder, Brigitte
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6787766/
https://www.ncbi.nlm.nih.gov/pubmed/31483197
http://dx.doi.org/10.1177/0956797619866625
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author Sourav, Suddha
Kekunnaya, Ramesh
Shareef, Idris
Banerjee, Seema
Bottari, Davide
Röder, Brigitte
author_facet Sourav, Suddha
Kekunnaya, Ramesh
Shareef, Idris
Banerjee, Seema
Bottari, Davide
Röder, Brigitte
author_sort Sourav, Suddha
collection PubMed
description Humans preferentially match arbitrary words containing higher- and lower-frequency phonemes to angular and smooth shapes, respectively. Here, we investigated the role of visual experience in the development of audiovisual and audiohaptic sound–shape associations (SSAs) using a unique set of five groups: individuals who had suffered a transient period of congenital blindness through congenital bilateral dense cataracts before undergoing cataract-reversal surgeries (CC group), individuals with a history of developmental cataracts (DC group), individuals with congenital permanent blindness (CB group), individuals with late permanent blindness (LB group), and controls with typical sight (TS group). Whereas the TS and LB groups showed highly robust SSAs, the CB, CC, and DC groups did not—in any of the modality combinations tested. These results provide evidence for a protracted sensitive period during which aberrant vision prevents SSA acquisition. Moreover, the finding of a systematic SSA in the LB group demonstrates that representations acquired during the sensitive period are resilient to loss despite dramatically changed experience.
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spelling pubmed-67877662019-10-23 A Protracted Sensitive Period Regulates the Development of Cross-Modal Sound–Shape Associations in Humans Sourav, Suddha Kekunnaya, Ramesh Shareef, Idris Banerjee, Seema Bottari, Davide Röder, Brigitte Psychol Sci Research Articles Humans preferentially match arbitrary words containing higher- and lower-frequency phonemes to angular and smooth shapes, respectively. Here, we investigated the role of visual experience in the development of audiovisual and audiohaptic sound–shape associations (SSAs) using a unique set of five groups: individuals who had suffered a transient period of congenital blindness through congenital bilateral dense cataracts before undergoing cataract-reversal surgeries (CC group), individuals with a history of developmental cataracts (DC group), individuals with congenital permanent blindness (CB group), individuals with late permanent blindness (LB group), and controls with typical sight (TS group). Whereas the TS and LB groups showed highly robust SSAs, the CB, CC, and DC groups did not—in any of the modality combinations tested. These results provide evidence for a protracted sensitive period during which aberrant vision prevents SSA acquisition. Moreover, the finding of a systematic SSA in the LB group demonstrates that representations acquired during the sensitive period are resilient to loss despite dramatically changed experience. SAGE Publications 2019-09-04 2019-10 /pmc/articles/PMC6787766/ /pubmed/31483197 http://dx.doi.org/10.1177/0956797619866625 Text en © The Author(s) 2019 http://creativecommons.org/licenses/by/4.0/ This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://www.creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Research Articles
Sourav, Suddha
Kekunnaya, Ramesh
Shareef, Idris
Banerjee, Seema
Bottari, Davide
Röder, Brigitte
A Protracted Sensitive Period Regulates the Development of Cross-Modal Sound–Shape Associations in Humans
title A Protracted Sensitive Period Regulates the Development of Cross-Modal Sound–Shape Associations in Humans
title_full A Protracted Sensitive Period Regulates the Development of Cross-Modal Sound–Shape Associations in Humans
title_fullStr A Protracted Sensitive Period Regulates the Development of Cross-Modal Sound–Shape Associations in Humans
title_full_unstemmed A Protracted Sensitive Period Regulates the Development of Cross-Modal Sound–Shape Associations in Humans
title_short A Protracted Sensitive Period Regulates the Development of Cross-Modal Sound–Shape Associations in Humans
title_sort protracted sensitive period regulates the development of cross-modal sound–shape associations in humans
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6787766/
https://www.ncbi.nlm.nih.gov/pubmed/31483197
http://dx.doi.org/10.1177/0956797619866625
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