The study focused at the objective and subjective indexes of human hearing system sensitivity towards different types of moving sound stimuli. The experiment employed two methods: electrophysiological (MMN recording) and psychophysical method (two-alternative forced choice). Two types of spatial sound stimuli simulated gradual and abrupt sound motion from the head midline. MMN as an objective index of spatial discrimination has been obtained in response to the subthreshold and the suprathreshold stimuli. An increase of trajectory length of the moving stimuli resulted in an increase of the MMN amplitude and of subjective discrimination as well, although their correlation remained below the significance level. The results obtained are discussed from the point of view of preconscious perception of auditory spatial information.
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