AUDITORY INTENSITY DISCRIMINATION AS A FUNCTION OF STIMULUS PRESENTATION METHOD
Abstract
Relative differential intensive limens were obtained at three frequencies and two intensities for three stimulus patterns involving fluctuation of a steady tone and three patterns involving separate stimuli. The same observers were utilized in all cases; in Experiment I, signals were presented through earphones. Somewhat lower thresholds were obtained for fluctuating intensity patterns than for separate stimuli patterns, thresholds tended to be lower at the high intensity level, and thresholds tended to be lower at the higher intensity level, and thresholds were lower for patterns allowing greater opportunity for comparison within the patterns. When similar thresholds were obtained for patterns presented through speakers (Experiment II) , thresholds were smaller, the influence of intensity was smaller, and the influence of (presentation) pattern type was less consistent. Significance of the findings is discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 25, 1962
- Accession Number
- AD0286768
Entities
People
- Glenn R. Hawkes
- Michel Loeb
Organizations
- United States Army Medical Research Laboratory