Reliability of the mismatch negativity in the responses of individual listeners.
The mismatch negativity (MMN) was recorded from 12 normal adults during four biweekly sessions. Responses were elicited by a synthetically generated speech contrast (/dalpha/-/galpha/) that all listeners discriminated with at least 90 percent accuracy. Standard and deviant waveforms were replicable across sessions for all listeners; however, replicability of the derived difference waveforms was poor. Of greater importance, the MMN identification rate was too low (29%) to allow reliability to be evaluated. The implications that these findings may have on clinical applicability are discussed.
Dalebout
S D
SD
Communication Disorders Program, University of Virginia, Charlottesville 22903, USA.
Fox
L G
LG
D000328:Adult; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D006801:Humans; D015203:Reproducibility of Results; D013067:Speech Perception / Q000502:physiology*; D013997:Time Factors