title: Gap detection and temporal modulation transfer function as behavioral estimates of auditory temporal acuity using band-limited stimuli in young and older adults.
abstract: OBJECTIVE
  Gap detection and the temporal modulation transfer function (TMTF) are 2 common methods to obtain behavioral estimates of auditory temporal acuity. However, the agreement between the 2 measures is not clear. This study compares results from these 2 methods and their dependencies on listener age and hearing status.
  
  
  METHODS
  Gap detection thresholds and the parameters that describe the TMTF (sensitivity and cutoff frequency) were estimated for young and older listeners who were naive to the experimental tasks. Stimuli were 800-Hz-wide noises with upper frequency limits of 2400 Hz, presented at 85 dB SPL. A 2-track procedure (Shen & Richards, 2013) was used for the efficient estimation of the TMTF.
  
  
  RESULTS
  No significant correlation was found between gap detection threshold and the sensitivity or the cutoff frequency of the TMTF. No significant effect of age and hearing loss on either the gap detection threshold or the TMTF cutoff frequency was found, while the TMTF sensitivity improved with increasing hearing threshold and worsened with increasing age.
  
  
  CONCLUSIONS
  Estimates of temporal acuity using gap detection and TMTF paradigms do not seem to provide a consistent description of the effects of listener age and hearing status on temporal envelope processing.
authors.forename: Yi
authors.initials: Y
authors.lastname: Shen
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001307:Auditory Perception / Q000502:physiology*; D001309:Auditory Threshold; D005260:Female; D034381:Hearing Loss / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009622:Noise; D011571:Psychoacoustics; D017603:Signal Detection, Psychological / Q000502:physiology*; D013997:Time Factors; D013998:Time Perception / Q000502:physiology*; D055815:Young Adult
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