Precise force controls enhance loudness discrimination of self-generated sound

Nozomi Endo, Takayuki Ito, Takemi Mochida, Tetsuya Ijiri, Katsumi Watanabe, Kimitaka Nakazawa

研究成果: Article査読

抄録

Motor executions alter sensory processes. Studies have shown that loudness perception changes when a sound is generated by active movement. However, it is still unknown where and how the motor-related changes in loudness perception depend on the task demand of motor execution. We examined whether different levels of precision demands in motor control affects loudness perception. We carried out a loudness discrimination test, in which the sound stimulus was produced in conjunction with the force generation task. We tested three target force amplitude levels. The force target was presented on a monitor as a fixed visual target. The generated force was also presented on the same monitor as a movement of the visual cursor. Participants adjusted their force amplitude in a predetermined range without overshooting using these visual targets and moving cursor. In the control condition, the sound and visual stimuli were generated externally (without a force generation task). We found that the discrimination performance was significantly improved when the sound was produced by the force generation task compared to the control condition, in which the sound was produced externally, although we did not find that this improvement in discrimination performance changed depending on the different target force amplitude levels. The results suggest that the demand for precise control to produce a fixed amount of force may be key to obtaining the facilitatory effect of motor execution in auditory processes.

本文言語English
ページ(範囲)1141-1149
ページ数9
ジャーナルExperimental Brain Research
239
4
DOI
出版ステータスPublished - 2021 4

ASJC Scopus subject areas

  • Neuroscience(all)

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