Piers Dawes|Tony Sirimanna|Martin J Burton|Iynga Vanniasegaram|Frances Tweedy|Dorothy V. M. Bishop
Temporal Auditory and Visual Motion Processing of Children Diagnosed with Auditory Processing Disorder and Dyslexia
University of Manchester|Great Ormond Street Hospital|University College London|John Radcliffe Hospital|Manchester Royal Infirmary|University of Oxford
auditory processing disorder apd diagnosed basis listening difficulties despite normal audiogram although cause unknown study examined hypothesis underlying cause apd modalityspecific deficit auditory temporal processing also considered far auditory impairments apd differ children dyslexiaperformance children diagnosed apd n 22 compared normative group n 98 well children dyslexia n 19 battery temporal auditory tasks 2hz frequency modulation fm 40hz fm iterated rippled noise detection well control task 240hz fm thought draw peripheral spectral mechanisms visual tasks coherent form coherent motion detectionon average apd group performed poorly normative group 40hz fm 240hz fm iterated rippled noise tasks significant differences apd dyslexia groups performance evidence specific temporal auditory impairment higher proportion children apd group performed poorly 1 sd visual tasks normative group auditory psychophysical performance correlated positively performance scanc standardized test auditory processing reading abilitythe research support modalityspecific impairment temporal auditory processing underlying cause apd apd dyslexia groups similar proportion displayed poor auditory performance seem entirely accounted attention performance iq however significance auditory difficulties uncertain serious difficulties auditory assessment also identified currently auditory perceptual deficits may better seen part multifactorial description learning problems rather part diagnostic category right