Abstract
The frequency discriminability of a 70-dB SPL, 20-msec test tone followed 5 msec later by an equally intense 500-msec, 800-Hz interference tone was studied in a single-interval procedure for one diotic condition and three dichotic conditions. The test tone (T) and interference tone (I) were presented the same to both ears (ToIo, diotic condition) and in three dichotic conditions: (1) the interference tone was presented to the right ear (R) and the test tone to the left ear (L) (TLIR), (2) the interference tone was presented the same to both ears and the test tone to one ear (TmIo), and (3) the interference tone was presented the same to both ears and the test tone to both ears with an interaural phase reversal (TπIo). The threshold value for test tone frequency discrimination in the diotic temporal interference condition was approximately six times greater than that obtained without an interference tone. The three dichotic temporal interference conditions yielded essentially equivalent threshold values which were approximately 2.4 times that obtained when the test tone was presented without an interference tone. Therefore, although never equaling interference-free conditions, dichotic test tone presentations can improve frequency recognition relative to diotic conditions at intensities well above threshold. It is postulated that this improvement may be due to the spatial separation of test and interfering tones, rather than to possible differences in diotic vs. dichotic subjective intensities. Dichotic-diotic frequency recognition differences did not occur when a 100-msec interval separated the test and interfering tone or when the interfering tone preceded the test tone.
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Cudahy, E., &Leshowitz, B. Effects of a contralateral interference tone on auditory recognition.Perception & Psychophysics, 1974,15, 16–21.
Green, D. M., &Swets, J. A.Signal detection theory and psychophysics. New York: Krieger. 1974.
Green, D. M., &Yost, W. A. Binaural analysis. In W. D. Keidel & W. D. Neff (Eds.),Handbook of sensory physiology (Vol. 2). New York: Springer-Verlag. 1975.
Leshowitz, B., &Cudahy, E. Frequency discrimination in the presence of another tone.Journal of the Acoustical Society of America, 1973,54, 883–887.
Loeb, M., &Holding, D. H. Backward interference by tones or noise in pitch perception as a function of practice.Perception & Psychophysics, 1975,18, 225–229.
Massaro, D. W. Pre-perceptual auditory images.Journal of Experimental Psychology. 1970,85, 411–417.
Massaro, D. W. Pre-perceptual images, processing time, and perceptual units in auditory perception.Psychological Review, 1972,79, 124–145.
Massaro, D. W.Experimental psychology and information processing. Chicago: Rand-McNally, 1975.
Sparks, O. W. Backward pitch-recognition interference.Journal of the Acoustical Society of America, 1976,60, S49(A).
Swets, J. A. (Ed.)Signal detection and recognition by human observers: Contemporary readings. New York: Wiley, 1964.
Townsend, T. H., &Goldstein, D. P. Suprathreshold binaural unmasking.Journal of the Acoustical Society of America, 1972,51, 621–624.
Yost, W. A., Berg, K., &Thomas, G. B. Frequency recognition in temporal interference tasks: A comparison among four psychophysical procedures.Perception & Psychophysics. 1976,20, 353–359.
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This research was supported in part by an NIH program project grant (NS 06459), an NIH training grant (NSO 5474), and an NIH research gram (NS 11157).
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Yost, W.A., Thomas, G.B. Diotic and dichotic frequency recognition in a single-interval temporal interference procedure. Perception & Psychophysics 22, 395–399 (1977). https://doi.org/10.3758/BF03199706
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DOI: https://doi.org/10.3758/BF03199706