Auditory frequency discrimination in adult developmental dyslexics.
Developmental dyslexics reportedly discriminate auditory frequency poorly. A recent study found no such deficit. Unlike its predecessors, however, it employed multiple exposures per trial to the standard stimulus. To investigate whether this affects frequency discrimination in dyslexics, a tradition...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2002
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| _version_ | 1826306678360899584 |
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| author | France, S Rosner, B Hansen, P Calvin, C Talcott, J Richardson, A Stein, J |
| author_facet | France, S Rosner, B Hansen, P Calvin, C Talcott, J Richardson, A Stein, J |
| author_sort | France, S |
| collection | OXFORD |
| description | Developmental dyslexics reportedly discriminate auditory frequency poorly. A recent study found no such deficit. Unlike its predecessors, however, it employed multiple exposures per trial to the standard stimulus. To investigate whether this affects frequency discrimination in dyslexics, a traditional two-interval same-different paradigm (2I_1A_X) and a variant with six A-stimuli per trial (2I_6A_X) were used here. Frequency varied around 500 Hz; interstimulus interval (ISI) ranged between 0 and 1,000 msec. Under 2I_1A_X, dyslexics always had larger just noticeable differences (JNDs) than did controls. Dyslexic and control JNDs were equal at shorter ISIs under 2I_6A_X, but dyslexics became worse than controls at longer ISIs. Signal detection analysis suggests that both sensory variance and trace variance are larger in dyslexics than in controls. |
| first_indexed | 2024-03-07T06:51:36Z |
| format | Journal article |
| id | oxford-uuid:fcbdb664-9e98-4805-bca1-345ba6411359 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:51:36Z |
| publishDate | 2002 |
| record_format | dspace |
| spelling | oxford-uuid:fcbdb664-9e98-4805-bca1-345ba64113592022-03-27T13:23:20ZAuditory frequency discrimination in adult developmental dyslexics.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fcbdb664-9e98-4805-bca1-345ba6411359EnglishSymplectic Elements at Oxford2002France, SRosner, BHansen, PCalvin, CTalcott, JRichardson, AStein, JDevelopmental dyslexics reportedly discriminate auditory frequency poorly. A recent study found no such deficit. Unlike its predecessors, however, it employed multiple exposures per trial to the standard stimulus. To investigate whether this affects frequency discrimination in dyslexics, a traditional two-interval same-different paradigm (2I_1A_X) and a variant with six A-stimuli per trial (2I_6A_X) were used here. Frequency varied around 500 Hz; interstimulus interval (ISI) ranged between 0 and 1,000 msec. Under 2I_1A_X, dyslexics always had larger just noticeable differences (JNDs) than did controls. Dyslexic and control JNDs were equal at shorter ISIs under 2I_6A_X, but dyslexics became worse than controls at longer ISIs. Signal detection analysis suggests that both sensory variance and trace variance are larger in dyslexics than in controls. |
| spellingShingle | France, S Rosner, B Hansen, P Calvin, C Talcott, J Richardson, A Stein, J Auditory frequency discrimination in adult developmental dyslexics. |
| title | Auditory frequency discrimination in adult developmental dyslexics. |
| title_full | Auditory frequency discrimination in adult developmental dyslexics. |
| title_fullStr | Auditory frequency discrimination in adult developmental dyslexics. |
| title_full_unstemmed | Auditory frequency discrimination in adult developmental dyslexics. |
| title_short | Auditory frequency discrimination in adult developmental dyslexics. |
| title_sort | auditory frequency discrimination in adult developmental dyslexics |
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