Specifically, MEAR results indicated that: (a) 50% (8/16) of the children with SM displayed no MEAR at maximum stimulation level in at least 2 of 12 assessment conditions [two ears, three tested frequencies (0.5, 1, 2 kHz), two stimulation sides (ipsi- and contra-lateral)] compared to only two children in the control group; (b) Children with SM had significantly higher prevalence of abnormal MEAR (absent or thresholds > 100 dB HL) and significantly higher MEAR thresholds for all tested frequencies excluding a marginally significant difference for right ear ipsi- and contralateral thresholds to 0.5 kHz tones; (c) Children with SM displayed significantly higher prevalence of abnormal right ear MEAR decay functions, and a marginally significant finding of higher prevalence of abnormal left ear ipsi-lateral MEAR decay function at 0.5 kHz.
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An auditory-neuroscience perspective on the development of selective mutism.
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