Cognitive evoked potentials and central auditory processing in children with reading and writing disorders.
Learning disorders are often magnified by auditory processing disorders (APD).


OBJECTIVE
This paper aims to verify whether individuals with reading and writing disorders and P300 latencies above the average also present altered Staggered Spondaic Word (SSW) and speech-in-noise test results suggestive of APD.


METHODS
This is a cross-sectional cohort study. Twenty-one individuals with reading and writing disorders aged between 7 and 14 years were enrolled.


RESULTS
All subjects had normal findings on ENT examination, audiological tests, and brainstem auditory evoked potentials. The average P300 latency (334,25 ms) of all patients was picked as a cutoff point to divide the subjects into two groups: group A with latencies above 335 ms, and group B with latencies below 335 ms. Individuals in group A underwent SSW and speech-in-noise testing.


CONCLUSIONS
Altered results in the SSW and speech-in-noise tests suggestive of APD were found in the group of individuals with reading and writing disorders with P300 latencies above 335 ms.
Hospital de Clínicas, Federal University of Paraná, Cirotiba, PR, Brazil. 　gislainermw@gmail.com
Gislaine Richter Minhoto
GR
Wiemes
Lorena
L
Kozlowski
Marcos
M
Mocellin
Rogério
R
Hamerschmidt
Luiz Henrique
LH
Schuch
D000293:Adolescent; D000381:Agraphia / Q000503:physiopathology*; D001308:Auditory Perceptual Disorders / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D002648:Child; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D018913:Event-Related Potentials, P300 / Q000502:physiology*; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006801:Humans; D007859:Learning Disabilities / Q000209:etiology* / Q000503:physiopathology; D008297:Male; D011932:Reading; D014956:Writing