Internal and external noise in binaural detection.
We studied the 2IFC detectability of a 500 Hz tone masked by computer-generated maskers under the N0SII interaural condition, and under two masker conditions. In the first masker condition the maskers in the two intervals of a trial were independent of each other, and in the second masker condition the maskers were identical, although maskers varied from trial to trial. Thresholds were higher for the independent-noise condition than for the identical noise condition. These results have implications for the Theory of Binaural Interaction Based on Auditory Nerve Data (Colburn, H.S. (1977): J. Acoust. Soc. Am. 54, 1458-1470; Colburn, H.S. (1977): J. Acoust. Soc. Am. 61, 525-533).
D001309:Auditory Threshold; D006309:Hearing / Q000502:physiology*; D006801:Humans; D009622:Noise