Visual search performance is aided by auditory spatial facilitation; however, auditory cue characteristics such as amplitude, harmonics, and pulse rate vary the perceived urgency of warning signals. In addition, task factors such as density and presence of distracting visual stimuli, distance of the visual target from the fovea, and precision of the auditory cue also affect search performance. The purpose of the present study was to evaluate the effect that direction of amplitude change has on search performance in uninformative single- and multiple-cue conditions. Each trial contained one visual target, one valid auditory cue, and one invalid cue. Auditory cues consisted of constant, increasing and decreasing amplitude, inharmonic or harmonic frequency, and fast and slow pulse rates. Visual targets were left or right facing arrowheads in a field of up and down facing arrowheads. No difference between cues was present in the single-cue condition; however, in the multiple-cue condition, decreasing-amplitude cues resulted in the shortest overall search latencies and constant-amplitude cues produced the longest.
|Advisor:||Strybel, Thomas Z.|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 50/03M, Masters Abstracts International|
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