title: Test-retest reliability of cortical evoked potentials using naturally produced speech sounds.
abstract: OBJECTIVE
  To determine if naturally produced speech stimuli evoke distinct neural response patterns that can be reliably recorded in individuals.
  
  
  METHODS
  Auditory cortical evoked potentials were obtained from seven normal-hearing young adults in response to four naturally produced speech tokens (/bi/, /pi/, /[U0283]i/, and /si/). Stimuli were tokens from the standardized UCLA version of the Nonsense Syllable Test (NST) ( Dubno & Schaefer, 1992). Using a repeated measures design, subjects were tested and then retested within an 8-day period.
  
  
  RESULTS
  Auditory cortical evoked potentials elicited by naturally produced speech sounds were reliably recorded in individuals. Also, naturally produced speech tokens, representing different acoustic cues, evoked distinct neural response patterns.
  
  
  CONCLUSIONS
  1) Cortical evoked potentials elicited by naturally produced speech sounds can be reliably recorded in individuals. 2) Naturally produced speech tokens, representing different acoustic cues, evoke distinct neural response patterns. 3) Given the reliability of the response, this work has potential application to the study of neural processing of speech in individuals with communication disorders as well as changes over time after various types of auditory rehabilitation.
authors.affiliation: Department of Speech and Hearing Sciences, University of Washington, 1417 NE 42nd St., Seattle, WA 98105, USA. tremblay@u.washington.edu
authors.forename: K L
authors.initials: KL
authors.lastname: Tremblay
authors.forename: L
authors.initials: L
authors.lastname: Friesen
authors.forename: B A
authors.initials: BA
authors.lastname: Martin
authors.forename: R
authors.initials: R
authors.lastname: Wright
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011930:Reaction Time / Q000502:physiology; D015203:Reproducibility of Results; D013061:Speech Acoustics