Deficits in auditory brainstem pathway encoding of speech sounds in children with learning problems.
Auditory brainstem responses were recorded in normal children (NL) and children clinically diagnosed with a learning problem (LP). These responses were recorded to both a click stimulus and the formant transition portion of a speech syllable /da/. While no latency differences between the NL and LP populations were seen in responses to the click stimuli, the syllable /da/ did elicit latency differences between these two groups. Deficits in cortical processing of signals in noise were seen for those LP subjects with delayed brainstem responses to the /da/, but not for LPs with normal brainstem measures. Preliminary findings indicate that training may be beneficial to LP subjects with brainstem processing delays.
King
Cynthia
C
Communication Sciences, 2299 North Campus Drive, Frances Searle Building, Northwestern University, Evanston, IL 60208, USA.
Warrier
Catherine M
CM
Hayes
Erin
E
Kraus
Nina
N
D000161:Acoustic Stimulation; D001304:Auditory Diseases, Central / Q000503:physiopathology*; D001306:Auditory Pathways / Q000502:physiology*; D001933:Brain Stem / Q000503:physiopathology*; D002540:Cerebral Cortex / Q000502:physiology; D002648:Child; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005260:Female; D006801:Humans; D007805:Language Development Disorders / Q000503:physiopathology*; D007859:Learning Disabilities / Q000503:physiopathology*; D008297:Male; D011930:Reaction Time / Q000502:physiology; D020127:Recovery of Function / Q000502:physiology; D013067:Speech Perception / Q000502:physiology*; D013070:Speech Therapy