title: An adaptive clinical test of temporal resolution: within-channel and across-channel gap detection.
abstract: OBJECTIVE
  Several methods exist to measure temporal resolution in a clinical setting. The Adaptive Tests of Temporal Resolution (ATTR©) are unique in that they incorporate an adaptive psychophysical procedure to present stimuli via computer sound card. The purpose of this study was to determine if ATTR gap detection thresholds (GDTs) were stable across presentation levels (80 dB SPL, listener-selected level) and sound cards (high-end, inexpensive).
  
  
  METHODS
  GDTs were measured using three conditions of the ATTR: broad-band noise within-channel (BBN-WC), narrowband noise within-channel (NBN-WC), and narrowband noise across-channel (NBN-AC). Analysis of the acoustical properties of ATTR stimuli was made by measuring the electrical signals produced by each sound card.
  
  
  METHODS
  Participants were 30 young adults with normal hearing.
  
  
  RESULTS
  The ATTR GDTs did not differ between presentation levels for all three stimulus conditions. Also, neither ATTR stimuli nor ATTR GDTs differed between sound cards for all conditions.
  
  
  CONCLUSIONS
  The ATTR may be used in a clinical setting with a relatively inexpensive sound card and listener-selected levels. Normative performance values for each ATTR condition are provided.
authors.affiliation: Department of Communication Sciences and Disorders, University of South Florida, Tampa 33620, USA. jlister@usf.edu
authors.forename: Jennifer J
authors.initials: JJ
authors.lastname: Lister
authors.forename: Richard A
authors.initials: RA
authors.lastname: Roberts
authors.forename: Jean C
authors.initials: JC
authors.lastname: Krause
authors.forename: Danielle
authors.initials: D
authors.lastname: Debiase
authors.forename: Heather
authors.initials: H
authors.lastname: Carlson
mesh_terms: D000161:Acoustic Stimulation; D000223:Adaptation, Psychological; D000328:Adult; D000704:Analysis of Variance; D001301:Audiometry, Pure-Tone; D001306:Auditory Pathways / Q000502:physiology*; D001307:Auditory Perception; D001309:Auditory Threshold; D005260:Female; D006801:Humans; D008297:Male; D011571:Psychoacoustics; D017603:Signal Detection, Psychological; D013018:Sound Spectrography; D013997:Time Factors; D013998:Time Perception; D055815:Young Adult