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- W2895953847 abstract "Uncertainty affects sensory perceptions, even for stimuli well above detection thresholds. Using an anticipatory eye-movement paradigm popularized in studies of linguistic perceptual certainty and competition, we measured perception of binaural cues in dichotic narrowband noises that varied by center frequency, bandwidth, envelope fluctuations and interaural correlation. Participant’s eye gaze served to mark detection of change in the ILD or ITD. We tracked the timing and direction of saccades, as well as the number of saccades (“guesses”) as a metric of perceptual uncertainty. Results showed gradually increasing performance accuracy for greater cue magnitude, coupled with fewer saccades overall. There was also a change in the distribution of saccade timings and number of saccades depending on whether cues were low-frequency ITD, high-frequency envelope ITD, correlated-noise ILD, or uncorrelated-noise ILD. All ILD results were consistent with a model of detection based on interaural envelope decorrelation; performance was particularly poorer, slower, and more variable for stimuli whose envelopes had greater fluctuation, but only when channels were uncorrelated. Comparison with behavioral accuracy and reaction time will be discussed. This study highlights the potential benefits of time-series analysis in psychoacoustic experiments in order to reveal some subtle effects of stimulus properties on perceptual judgments and certainty." @default.
- W2895953847 created "2018-10-26" @default.
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- W2895953847 date "2018-09-01" @default.
- W2895953847 modified "2023-09-24" @default.
- W2895953847 title "Time-series analysis of binaural perception and uncertainty using eye movements" @default.
- W2895953847 doi "https://doi.org/10.1121/1.5067588" @default.
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