Tracking of a “Moving” Fused Auditory Image Under Conditions that Elicit the Precedence Effect Pursuit auditory tracking of a fused auditory image (FAI), based on stimulus conditions known to elicit the precedence effect phenomenon in sound localization, was investigated in 36 normal subjects and in a small group of subjects with known neuropathology. Movement of the FAI was simulated by incrementally varying the delay ... Research Article
Research Article  |   March 01, 1990
Tracking of a “Moving” Fused Auditory Image Under Conditions that Elicit the Precedence Effect
 
Author Affiliations & Notes
  • Christopher A. Moore
    Wichita State University
  • Jerry L. Cranford
    Wichita State University
  • Angela E. Rahn
    Wichita State University
  • Requests for reprints should be sent to Christopher A. Moore, Cleft Palate-Craniofacial Center, 313 Salk Hall, University of Pittsburgh, Pittsburgh, PA 15261.
  • * Current affiliation: Cleft Palate-Craniofacial Center, University of Pittsburgh.
    Current affiliation: Cleft Palate-Craniofacial Center, University of Pittsburgh.×
Article Information
Research Articles
Research Article   |   March 01, 1990
Tracking of a “Moving” Fused Auditory Image Under Conditions that Elicit the Precedence Effect
Journal of Speech, Language, and Hearing Research, March 1990, Vol. 33, 141-148. doi:10.1044/jshr.3301.141
History: Received April 17, 1989 , Accepted September 11, 1989
 
Journal of Speech, Language, and Hearing Research, March 1990, Vol. 33, 141-148. doi:10.1044/jshr.3301.141
History: Received April 17, 1989; Accepted September 11, 1989

Pursuit auditory tracking of a fused auditory image (FAI), based on stimulus conditions known to elicit the precedence effect phenomenon in sound localization, was investigated in 36 normal subjects and in a small group of subjects with known neuropathology. Movement of the FAI was simulated by incrementally varying the delay between two clicks presented, one each, from two loudspeakers placed on opposite sides of the listener. The group of normal listeners tracked the movement of the FAI without difficulty and with great accuracy; the perceived location of the FAI varied linearly with the interspeaker delay. The sensitivity of the task in detecting neural timing or integration deficits was investigated in 5 subjects with neuropathology, including subjects with unilateral temporal lobe lesions, multiple sclerosis, or dyslexia. These disorders, previously shown to disrupt neural timing, yielded characteristic patterns of tracking inaccuracy for this task. These subjects had no difficulty localizing either a moving unitary click source or sounds in daily life. These data support the suggestion that sound localization using stimulus conditions known to elicit the precedence effect places greater demands on neural timing and integration than conventional tests of localization, and may provide a more sensitive index of neural function.

Order a Subscription
Pay Per View
Entire Journal of Speech, Language, and Hearing Research content & archive
24-hour access
This Article
24-hour access