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101
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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102
A case of exceptional reading accuracy in a child with Down syndrome: underlying skills and the relation to reading comprehension
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103
What Causes Specific Language Impairment in Children?
Bishop, Dorothy V M. - : Blackwell Publishing Ltd, 2006
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104
Developmental cognitive genetics: How psychology can inform genetics and vice versa
Bishop, Dorothy V. M.. - : Psychology Press Taylor & Francis Group, 2006
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105
A case of exceptional reading accuracy in a child with Down syndrome: Underlying skills and the relation to reading comprehension
Groen, Margriet A.; Laws, Glynis; Nation, Kate. - : Taylor & Francis, 2006
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106
Frequency discrimination and literacy skills in children with mild to moderate sensorineural hearing loss
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 48 (2005) 5, 1187-1203
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107
Auditory frequency discrimination in children with specific language impairment : a longitudinal study
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 48 (2005) 5, 1136-1146
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108
Poor frequency discrimination is related to oral language disorder in children : a psychoacoustic study
In: Dyslexia. - Bracknell : British Dyslexia Association 11 (2005) 3, 155-173
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109
Speech and non-speech processing in people with specific language impairment : a behavioural and electrophysiological study
In: Brain & language. - Orlando, Fla. [u.a.] : Elsevier 94 (2005) 3, 260-273
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110
Effectiveness of computerised spelling training in children with language impairments : a comparison of modified and unmodified speech input
In: Journal of research in reading. - Leeds : Wiley-Blackwell 28 (2005) 2, 144-157
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111
Perception of transient nonspeech stimuli is normal in specific language impairment : evidence from glide discrimination
In: Applied psycholinguistics. - Cambridge [u.a.] : Cambridge Univ. Press 26 (2005) 2, 175-194
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OLC Linguistik
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112
Children's Communication Checklist - 2 [CCC-2] : a validation study
In: Travaux neuchâtelois de linguistique. - Neuchâtel : Inst. des Sciences du Langage et de la Communication (2005) 42, 53-63
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113
Genetic influences in different aspects of language development : the etiology of language skills in 4.5-year-old twins
In: Child development. - Malden, Ma. [u.a.] : Blackwell 76 (2005) 3, 632-651
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114
Hemispheric Specialization for Processing Auditory Nonspeech Stimuli
Jamison, Helen L.; Watkins, Kate E.; Bishop, Dorothy V. M.. - : Oxford University Press, 2005
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115
Executive functions in children with communication impairments, in relation to autistic symptomatology. 2: response inhibition
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116
Executive functions in children with communication impairments, in relation to autistic symptomatology. 1: generativity
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117
Genetic influences on language impairment and phonological short-term memory
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118
Genetic influences in different aspects of language development: the etiology of language skills in 4.5-year-old twins
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119
Speech and language impairments in children : causes, characteristics, intervention and outcome
Bishop, Dorothy V. M. (Hrsg.). - Repr. - East Sussex : Psychology Press [u.a.], 2004
UB Frankfurt Linguistik
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120
Simulating SLI : general cognitive processing stressors can produce a specific linguistic profile
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 47 (2004) 6, 1347-1362
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