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<p>The aims of the present work were to study event-related potentials (ERP) during cyclic movement of sound stimuli and to select the optimal model of neural encoding of azimuthal movement. Stepped or linear movement patterns were specified by cyclic changes in the interaural delay (ΔT), which changed by 800 μsec and then returned to the initial value. Statistically significant ERP for movement onset and repeated changes in direction (turns) were found only for the stepped pattern of ΔT changes. Response amplitudes were systematically dependent on the angular position of the turning points relative to the midline of the head. These results support the two-channel model of spatial information encoding in the auditory cortex. ERP for movement termination at the end of the signal indicated involvement of spatial attention and sensory memory at the preconscious stage of cyclic movement perception.</p>

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Event-Related Potential Responses to Cyclic Sound Motion

  • 期刊论文

  • 发表日期：

    2025年9月11日

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  • L. B. Shestopalova,
  • E. A. Petropavlovskaia,
  • P. I. Letyagin,
  • D. A. Salikova

摘要

The aims of the present work were to study event-related potentials (ERP) during cyclic movement of sound stimuli and to select the optimal model of neural encoding of azimuthal movement. Stepped or linear movement patterns were specified by cyclic changes in the interaural delay (ΔT), which changed by 800 μsec and then returned to the initial value. Statistically significant ERP for movement onset and repeated changes in direction (turns) were found only for the stepped pattern of ΔT changes. Response amplitudes were systematically dependent on the angular position of the turning points relative to the midline of the head. These results support the two-channel model of spatial information encoding in the auditory cortex. ERP for movement termination at the end of the signal indicated involvement of spatial attention and sensory memory at the preconscious stage of cyclic movement perception.