Abstract
Event-related potential (ERP) measures, in particular, the mismatch negativity (MMN), were combined with behavioural tests to examine auditory discrimination and memory functions in school-age children with specific language impairment (SLI). The MMN component is an integrated response to echoic memory representation of the standard stimulus and new afferent elements of the deviant stimuli. Neural activation was recorded for frequency differences in pure tones. Four tests were used to assess the auditory discrimination at behavioural level, two tests in pure tones and two in phonemes. A battery of 7 language tests was given to the SLI children. In the SLI group, the frequency MMN was weaker than in the reference group. The automatic memory recall in mismatch situation was found to reflect other information processes than conscious auditory perception.
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