Sensory error drives fine motor adjustment

Author:

Wang Huimin1,Zhou Yuxuan2,Li Huanhuan3,Moss Cynthia F.4ORCID,Li Xingxing2ORCID,Luo Jinhong1ORCID

Affiliation:

1. Hubei Key Laboratory of Genetic Regulation & Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China

2. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China

3. Research and Development Department, Shanghai KeyGo Technology Company Limited, Shanghai 200090, China

4. Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD 21218

Abstract

Fine audiovocal control is a hallmark of human speech production and depends on precisely coordinated muscle activity guided by sensory feedback. Little is known about shared audiovocal mechanisms between humans and other mammals. We hypothesized that real-time audiovocal control in bat echolocation uses the same computational principles as human speech. To test the prediction of this hypothesis, we applied state feedback control (SFC) theory to the analysis of call frequency adjustments in the echolocating bat, Hipposideros armiger . This model organism exhibits well-developed audiovocal control to sense its surroundings via echolocation. Our experimental paradigm was analogous to one implemented in human subjects. We measured the bats’ vocal responses to spectrally altered echolocation calls. Individual bats exhibited highly distinct patterns of vocal compensation to these altered calls. Our findings mirror typical observations of speech control in humans listening to spectrally altered speech. Using mathematical modeling, we determined that the same computational principles of SFC apply to bat echolocation and human speech, confirming the prediction of our hypothesis.

Funder

National Natural Science Foundation of China

Human Frontier Science Program

National Science Foundation

DOD | USAF | AMC | Air Force Office of Scientific Research

DOD | USN | Office of Naval Research

Publisher

Proceedings of the National Academy of Sciences

Subject

Multidisciplinary

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