title: Normative data on audiovisual speech integration using sentence recognition and capacity measures.
abstract: OBJECTIVE
  The ability to use visual speech cues and integrate them with auditory information is important, especially in noisy environments and for hearing-impaired (HI) listeners. Providing data on measures of integration skills that encompass accuracy and processing speed will benefit researchers and clinicians.
  
  
  METHODS
  The study consisted of two experiments: First, accuracy scores were obtained using City University of New York (CUNY) sentences, and capacity measures that assessed reaction-time distributions were obtained from a monosyllabic word recognition task.
  
  
  METHODS
  We report data on two measures of integration obtained from a sample comprised of 86 young and middle-age adult listeners:
  
  
  RESULTS
  To summarize our results, capacity showed a positive correlation with accuracy measures of audiovisual benefit obtained from sentence recognition. More relevant, factor analysis indicated that a single-factor model captured audiovisual speech integration better than models containing more factors. Capacity exhibited strong loadings on the factor, while the accuracy-based measures from sentence recognition exhibited weaker loadings.
  
  
  CONCLUSIONS
  Results suggest that a listener's integration skills may be assessed optimally using a measure that incorporates both processing speed and accuracy.
authors: a Department of Communication Sciences and Disorders , Idaho State University , Pocatello , USA.
authors: Nicholas
authors: N
authors: Altieri
authors: a Department of Communication Sciences and Disorders , Idaho State University , Pocatello , USA.
authors: Daniel
authors: D
authors: Hudock
mesh_terms: D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D001301:Audiometry, Pure-Tone; D001302:Audiometry, Speech; D001309:Auditory Threshold; D003463:Cues; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D046709:Pattern Recognition, Physiological; D011930:Reaction Time; D021641:Recognition, Psychology; D013067:Speech Perception; D014796:Visual Perception; D055815:Young Adult
keywords: Audiovisual integration; capacity; factor analysis; normative data; reaction time; speech perception