Abstract
Subjective and objective indexes of the sensitivity of the human hearing system to changes in the velocity of sound motion were compared. The movement of stimuli to the left or right from the head midline was simulated by linearly increasing the interaural time delay (ITD) in the dichotic stimuli. Comparison study of stimulus velocity discrimination estimated from the results of psychophysical experiments using the two-alternative forced choice paradigm and from electrophysiological recordings of auditory event-related potentials (ERPs) and mismatch negativity (MMN) was performed. Significant MMN was elicited by the difference between stimulus velocities that was below the discrimination threshold in the psychophysical experiment. The MMN amplitude depended on the difference between the stimulus velocities and was a more sensitive index of stimulus velocity discrimination compared to subjective differentiation.
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Original Russian Text © L.B. Shestopalova, E.A. Petropavlovskaia, S.Ph. Vaitulevich, N.I. Nikitin, 2015, published in Fiziologiya Cheloveka, 2015, Vol. 41, No. 2, pp. 14–22.
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Shestopalova, L.B., Petropavlovskaia, E.A., Vaitulevich, S.P. et al. Sensitivity of the hearing system to the velocity of auditory motion: Discrimination thresholds and mismatch negativity. Hum Physiol 41, 123–129 (2015). https://doi.org/10.1134/S0362119715020164
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DOI: https://doi.org/10.1134/S0362119715020164