title: Recognition performance on words interrupted (10 ips, 50% duty cycle) with two interruption patterns referenced to word onset: Young listeners with normal hearing for pure tones and older listeners with sensorineural hearing loss.
abstract: OBJECTIVE
  To determine in an interrupted word paradigm (Maryland CNCs; 10 ips, 50% duty cycle) if different locations of the interruption pattern produce different recognition performances.
  
  
  METHODS
  Repeated measures using two interruption patterns that were complementary halves referenced to word onset; one started with word onset (0-ms), the other started 50 ms later. The hypothesis was that recognition performance would be better on the 0-ms condition than on the 50-ms condition, but there would be some words with the reverse relation.
  
  
  METHODS
  Twenty-four young adults with normal hearing for pure tones and 32 older adults (mean = 67 years) with sensorineural hearing loss participated.
  
  
  RESULTS
  With the young listeners mean recognition performance on the 0-ms condition (63.1%) was significantly better than the mean performance on the 50-ms condition (47.8%). About twice as many words had better performance on the 0-ms condition. With the older listeners, who were given only stimuli on which performances were > 58% by the young normals, performances on the two conditions were the same.
  
  
  CONCLUSIONS
  The hypothesis was supported with the young listeners. The equal performance by the older listeners on the two conditions was attributed to the manner in which the words were selected.
authors.affiliation: a VA Medical Center, Mountain Home, Tennessee and East Tennessee State University , Johnson City , USA.
authors.forename: Richard H
authors.initials: RH
authors.lastname: Wilson
authors.affiliation: a VA Medical Center, Mountain Home, Tennessee and East Tennessee State University , Johnson City , USA.
authors.forename: Staci E
authors.initials: SE
authors.lastname: Irish
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001301:Audiometry, Pure-Tone; D005260:Female; D064368:Healthy Volunteers; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010470:Perceptual Masking; D010700:Phonetics; D013063:Speech Discrimination Tests / Q000379:methods*; D013067:Speech Perception / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult
keywords: Auditory perception; hearing loss; interrupted speech; speech perception