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Research Article
Susumu Urakawa
Hiroshima University
Corresponding Author
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During robot-assisted tasks, central nervous system may attend to external information-processing mode, termed as external attending. However, the neural mechanisms underlying this process remain unclear. The rostromedial prefrontal cortex (rmPFC) may be the core of an attentional control system that biases the allocation of attentional resources toward external information-processing when external attending is required for ongoing task performance. Here, we employed functional near-infrared spectroscopy to investigate hemodynamic responses in rmPFC subregions and additional frontal-parietal cortices during robot-assisted motor execution. Elbow flexion-extension movements, which require attention to kinematic consistency in range-of-motion, were employed as a motor task. Eighteen participants performed the task in three loading conditions requiring different degrees of external attending in ascending order: non-loading (NON), resistive loading (RES), and robotic assistive loading condition (ROB). Hemodynamic responses in the ventral and dorsal rmPFC were higher during ROB than during NON. Responses in the ventral rmPFC were significantly higher during ROB than during RES. Further, hemodynamic responses in the dorsal rmPFC during ROB were positively correlated with kinematic variability. These data suggest that robot-assisted motor execution involves rmPFC processes to bias the allocation of attentional resources toward external information-processing.
Keywords
robot-assisted tasks, RES, NON, ROB, hemodynamic responses, rmPFC processes
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No competing interests reported.
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A new preprint design is coming!
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research Article
Susumu Urakawa
Hiroshima University
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 10 May, 2021
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Developmental Neuroscience
License:
This work is licensed under a CC BY 4.0 License. Read Full License
During robot-assisted tasks, central nervous system may attend to external information-processing mode, termed as external attending. However, the neural mechanisms underlying this process remain unclear. The rostromedial prefrontal cortex (rmPFC) may be the core of an attentional control system that biases the allocation of attentional resources toward external information-processing when external attending is required for ongoing task performance. Here, we employed functional near-infrared spectroscopy to investigate hemodynamic responses in rmPFC subregions and additional frontal-parietal cortices during robot-assisted motor execution. Elbow flexion-extension movements, which require attention to kinematic consistency in range-of-motion, were employed as a motor task. Eighteen participants performed the task in three loading conditions requiring different degrees of external attending in ascending order: non-loading (NON), resistive loading (RES), and robotic assistive loading condition (ROB). Hemodynamic responses in the ventral and dorsal rmPFC were higher during ROB than during NON. Responses in the ventral rmPFC were significantly higher during ROB than during RES. Further, hemodynamic responses in the dorsal rmPFC during ROB were positively correlated with kinematic variability. These data suggest that robot-assisted motor execution involves rmPFC processes to bias the allocation of attentional resources toward external information-processing.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
No competing interests reported.
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