Effect of stimulus intensity on short-latency auditory evoked potentials in persons with DownŽs Syndrome.

Studied the effect of stimulus intensity on the latency of Wave V in 12 Ss (aged 10–17 yrs) with Down’s syndrome (DS) and the differences between these Ss and 14 nonretarded controls (aged 11–29 yrs) in terms of other components of short-latency auditory evoked potentials . The latency of Wave V was significantly shorter in the DS Ss than in the controls at intensities of 45 and 65 dB and was about the same in the 2 groups at 25 dB. The DS Ss also exhibited a shorter Wave III latency than did controls at 45 and 65 dB. Findings appear to constitute a set of neurofunctional abnormalities inherent to DS. (PsycINFO Database Record (c) 2016 APA, all rights reserved)