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Common constraints limit Korean and English character recognition in peripheral vision

The visual span refers to the number of adjacent characters that can be recognized in a single glance. It is viewed as a sensory bottleneck in reading for both normal and clinical populations. In peripheral vision, the visual span for English characters can be enlarged after training with a letter-r...

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Autores principales: He, Yingchen, Kwon, MiYoung, Legge, Gordon E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Association for Research in Vision and Ophthalmology 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5764199/
https://www.ncbi.nlm.nih.gov/pubmed/29327041
http://dx.doi.org/10.1167/18.1.5
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author He, Yingchen
Kwon, MiYoung
Legge, Gordon E.
author_facet He, Yingchen
Kwon, MiYoung
Legge, Gordon E.
author_sort He, Yingchen
collection PubMed
description The visual span refers to the number of adjacent characters that can be recognized in a single glance. It is viewed as a sensory bottleneck in reading for both normal and clinical populations. In peripheral vision, the visual span for English characters can be enlarged after training with a letter-recognition task. Here, we examined the transfer of training from Korean to English characters for a group of bilingual Korean native speakers. In the pre- and posttests, we measured visual spans for Korean characters and English letters. Training (1.5 hours × 4 days) consisted of repetitive visual-span measurements for Korean trigrams (strings of three characters). Our training enlarged the visual spans for Korean single characters and trigrams, and the benefit transferred to untrained English symbols. The improvement was largely due to a reduction of within-character and between-character crowding in Korean recognition, as well as between-letter crowding in English recognition. We also found a negative correlation between the size of the visual span and the average pattern complexity of the symbol set. Together, our results showed that the visual span is limited by common sensory (crowding) and physical (pattern complexity) factors regardless of the language script, providing evidence that the visual span reflects a universal bottleneck for text recognition.
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spelling pubmed-57641992018-01-12 Common constraints limit Korean and English character recognition in peripheral vision He, Yingchen Kwon, MiYoung Legge, Gordon E. J Vis Article The visual span refers to the number of adjacent characters that can be recognized in a single glance. It is viewed as a sensory bottleneck in reading for both normal and clinical populations. In peripheral vision, the visual span for English characters can be enlarged after training with a letter-recognition task. Here, we examined the transfer of training from Korean to English characters for a group of bilingual Korean native speakers. In the pre- and posttests, we measured visual spans for Korean characters and English letters. Training (1.5 hours × 4 days) consisted of repetitive visual-span measurements for Korean trigrams (strings of three characters). Our training enlarged the visual spans for Korean single characters and trigrams, and the benefit transferred to untrained English symbols. The improvement was largely due to a reduction of within-character and between-character crowding in Korean recognition, as well as between-letter crowding in English recognition. We also found a negative correlation between the size of the visual span and the average pattern complexity of the symbol set. Together, our results showed that the visual span is limited by common sensory (crowding) and physical (pattern complexity) factors regardless of the language script, providing evidence that the visual span reflects a universal bottleneck for text recognition. The Association for Research in Vision and Ophthalmology 2018-01-11 /pmc/articles/PMC5764199/ /pubmed/29327041 http://dx.doi.org/10.1167/18.1.5 Text en Copyright 2018 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
spellingShingle Article
He, Yingchen
Kwon, MiYoung
Legge, Gordon E.
Common constraints limit Korean and English character recognition in peripheral vision
title Common constraints limit Korean and English character recognition in peripheral vision
title_full Common constraints limit Korean and English character recognition in peripheral vision
title_fullStr Common constraints limit Korean and English character recognition in peripheral vision
title_full_unstemmed Common constraints limit Korean and English character recognition in peripheral vision
title_short Common constraints limit Korean and English character recognition in peripheral vision
title_sort common constraints limit korean and english character recognition in peripheral vision
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5764199/
https://www.ncbi.nlm.nih.gov/pubmed/29327041
http://dx.doi.org/10.1167/18.1.5
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