Intra-auditory integration between pitch and loudness in humans: Evidence of super-optimal integration at moderate uncertainty in auditory signals

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dc.contributor.authorKoh, Kyung
dc.contributor.authorKwon, Hyun Joon
dc.contributor.authorKiemel, Tim
dc.contributor.authorMiller, Ross H.
dc.contributor.authorPark, Yang Sun
dc.contributor.authorKim, Min Joo
dc.contributor.authorKwon, Young Ha
dc.contributor.authorKim, Yoon Hyuk
dc.contributor.authorShim, Jae Kun
dc.date.accessioned2019-12-02T18:44:43Z
dc.date.available2019-12-02T18:44:43Z
dc.date.issued2018-09-12
dc.descriptionPartial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.
dc.description.abstractWhen a person plays a musical instrument, sound is produced and the integrated frequency and intensity produced are perceived aurally. The central nervous system (CNS) receives defective afferent signals from auditory systems and delivers imperfect efferent signals to the motor system due to the noise in both systems. However, it is still little known about auditory-motor interactions for successful performance. Here, we investigated auditory-motor interactions as multi-sensory input and multi-motor output system. Subjects performed a constant force production task using four fingers in three different auditory feedback conditions, where either the frequency (F), intensity (I), or both frequency and intensity (FI) of an auditory tone changed with sum of finger forces. Four levels of uncertainty (high, moderate-high, moderate-low, and low) were conditioned by manipulating the feedback gain of the produced force. We observed performance enhancement under the FI condition compared to either F or I alone at moderate-high uncertainty. Interestingly, the performance enhancement was greater than the prediction of the Bayesian model, suggesting super-optimality. We also observed deteriorated synergistic multi-finger interactions as the level of uncertainty increased, suggesting that the CNS responded to increased uncertainty by changing control strategy of multi-finger actions.en_US
dc.identifierhttps://doi.org/10.13016/en2w-v8yq
dc.identifier.citationKoh, K., Kwon, H.J., Kiemel, T. et al. Intra-auditory integration between pitch and loudness in humans: Evidence of super-optimal integration at moderate uncertainty in auditory signals. Sci Rep 8, 13708 (2018) doi:10.1038/s41598-018-31792-wen_US
dc.identifier.urihttp://hdl.handle.net/1903/25306
dc.language.isoen_USen_US
dc.publisherNature Publishing Groupen_US
dc.relation.isAvailableAtSchool of Public Healthen_us
dc.relation.isAvailableAtKinesiologyen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.titleIntra-auditory integration between pitch and loudness in humans: Evidence of super-optimal integration at moderate uncertainty in auditory signalsen_US
dc.typeArticleen_US

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