Cargando…
Dyslexic Adults Can Learn from Repeated Stimulus Presentation but Have Difficulties in Excluding External Noise
We examined whether the characteristic impairments of dyslexia are due to a deficit in excluding external noise or a deficit in taking advantage of repeated stimulus presentation. We compared non-impaired adults and adults with poor reading performance on a visual letter detection task that varied t...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2011
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3223213/ https://www.ncbi.nlm.nih.gov/pubmed/22132164 http://dx.doi.org/10.1371/journal.pone.0027893 |
_version_ | 1782217272892325888 |
---|---|
author | Beattie, Rachel L. Lu, Zhong-Lin Manis, Franklin R. |
author_facet | Beattie, Rachel L. Lu, Zhong-Lin Manis, Franklin R. |
author_sort | Beattie, Rachel L. |
collection | PubMed |
description | We examined whether the characteristic impairments of dyslexia are due to a deficit in excluding external noise or a deficit in taking advantage of repeated stimulus presentation. We compared non-impaired adults and adults with poor reading performance on a visual letter detection task that varied two aspects: the presence or absence of background visual noise, and a small or large stimulus set. There was no interaction between group and stimulus set size, indicating that the poor readers took advantage of repeated stimulus presentation as well as the non-impaired readers. The poor readers had higher thresholds than non-impaired readers in the presence of high external noise, but not in the absence of external noise. The results support the hypothesis that an external noise exclusion deficit, not a perceptual anchoring deficit, impairs reading for adults. |
format | Online Article Text |
id | pubmed-3223213 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-32232132011-11-30 Dyslexic Adults Can Learn from Repeated Stimulus Presentation but Have Difficulties in Excluding External Noise Beattie, Rachel L. Lu, Zhong-Lin Manis, Franklin R. PLoS One Research Article We examined whether the characteristic impairments of dyslexia are due to a deficit in excluding external noise or a deficit in taking advantage of repeated stimulus presentation. We compared non-impaired adults and adults with poor reading performance on a visual letter detection task that varied two aspects: the presence or absence of background visual noise, and a small or large stimulus set. There was no interaction between group and stimulus set size, indicating that the poor readers took advantage of repeated stimulus presentation as well as the non-impaired readers. The poor readers had higher thresholds than non-impaired readers in the presence of high external noise, but not in the absence of external noise. The results support the hypothesis that an external noise exclusion deficit, not a perceptual anchoring deficit, impairs reading for adults. Public Library of Science 2011-11-23 /pmc/articles/PMC3223213/ /pubmed/22132164 http://dx.doi.org/10.1371/journal.pone.0027893 Text en Beattie et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Beattie, Rachel L. Lu, Zhong-Lin Manis, Franklin R. Dyslexic Adults Can Learn from Repeated Stimulus Presentation but Have Difficulties in Excluding External Noise |
title | Dyslexic Adults Can Learn from Repeated Stimulus Presentation but Have Difficulties in Excluding External Noise |
title_full | Dyslexic Adults Can Learn from Repeated Stimulus Presentation but Have Difficulties in Excluding External Noise |
title_fullStr | Dyslexic Adults Can Learn from Repeated Stimulus Presentation but Have Difficulties in Excluding External Noise |
title_full_unstemmed | Dyslexic Adults Can Learn from Repeated Stimulus Presentation but Have Difficulties in Excluding External Noise |
title_short | Dyslexic Adults Can Learn from Repeated Stimulus Presentation but Have Difficulties in Excluding External Noise |
title_sort | dyslexic adults can learn from repeated stimulus presentation but have difficulties in excluding external noise |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3223213/ https://www.ncbi.nlm.nih.gov/pubmed/22132164 http://dx.doi.org/10.1371/journal.pone.0027893 |
work_keys_str_mv | AT beattierachell dyslexicadultscanlearnfromrepeatedstimuluspresentationbuthavedifficultiesinexcludingexternalnoise AT luzhonglin dyslexicadultscanlearnfromrepeatedstimuluspresentationbuthavedifficultiesinexcludingexternalnoise AT manisfranklinr dyslexicadultscanlearnfromrepeatedstimuluspresentationbuthavedifficultiesinexcludingexternalnoise |