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1
A cross-linguistic evaluation of script-specific effects on fMRI lateralization in late second language readers
Koyama, Maki S.; Stein, John F.; Stoodley, Catherine J.. - : Frontiers Media S.A., 2014
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2
Balancing and pointing tasks in dyslexic and control adults
In: Dyslexia. - Bracknell : British Dyslexia Association 12 (2006) 4, 276-288
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3
Auditory event-related potentials differ in dyslexics even when auditory psychophysical performance is normal
Abstract: Developmental dyslexia is characterized by a phonological processing deficit and impaired low-level auditory processing may contribute to this problem. However, this remains controversial because not all dyslexic individuals show psychophysical deficits on auditory processing tasks; hence it has been argued that auditory processing deficits are not a causal factor in dyslexia. Because behavioral psychophysical tasks include both bottom-up processing and top-down strategies, dyslexics' successful coping strategies may positively influence their performance on auditory behavioral measures. Therefore we have studied whether dyslexics who perform adequately on auditory psychophysical tasks nevertheless show electrophysiological evidence of impaired auditory processing. We compared auditory event-related mismatch negativity (MMN) potentials to frequency modulated (FM) tones at 5, 20 and 240 Hz between dyslexic adults and controls. Groups were matched for age, cognitive ability and psychophysical FM detection thresholds. The dyslexic group showed significantly smaller MMNs in the 20 Hz FM condition in both the early (150-300 ms, P = 0.010) and late (300-500 ms, P = 0.049) time frames. A 2-way ANOVA showed a significant group by FM rate interaction (P = 0.012). There were no significant differences between the groups in the 5 Hz or 240 Hz conditions. The magnitude of the 20 Hz FM MMN correlated with the degree of discrepancy between cognitive and literacy skills (0.66, P = 0.003) in the entire group. Thus, even among compensated dyslexics with above-average cognitive abilities and adequate performance on auditory psychophysical tasks, the MMN responses of some dyslexic adults were found to be abnormal. ; The full-text of this article is not available in ORA, but you may be able to access the article via the publisher copy link on this record page.
Keyword: auditory processing; dyslexia; event-related potential; Experimental psychology; frequency modulation
URL: https://doi.org/10.1016/j.brainres.2006.08.095
http://www.elsevier.com/wps/find/journaldescription.cws_home/622287/description#description
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4
On the relationship between dynamic visual and auditory processing and literacy skills : results from a large primary-school study
In: Dyslexia. - Bracknell : British Dyslexia Association 8 (2002) 4, 204-225
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5
On the relationship between dynamic visual and auditory processing and literacy skills; results from a large primary-school study
In: Dyslexia. - Bracknell : British Dyslexia Association 8 (2002) 4, 204-225
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6
Separate influences of acoustic AM and FM sensitivity on the phonological decording skills of impaired and normal readers
In: Journal of cognitive neuroscience. - Cambridge, Mass. : MIT Press Journals 14 (2002) 6, 866-874
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7
Separate Influences of Acoustic AM and FM Sensitivity on the Phonological Decoding Skills of Impaired
In: Journal of cognitive neuroscience. - Cambridge, Mass. : MIT Press Journals 14 (2002) 6, 866-874
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