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New measures of agency from an adaptive sensorimotor task

Shiyun Wang, Sivananda Rajananda, Hakwan Lau, View ORCID ProfileJ.D. Knotts
doi: https://doi.org/10.1101/2020.07.28.223503
Shiyun Wang
1Department of Psychology, University of California, Los Angeles, USA
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Sivananda Rajananda
1Department of Psychology, University of California, Los Angeles, USA
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Hakwan Lau
1Department of Psychology, University of California, Los Angeles, USA
2Brain Research Institute, University of California, Los Angeles, USA
3Department of Psychology, University of Hong Kong, Pok Fu Lam, Hong Kong
4State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Pok Fu Lam, Hong Kong
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J.D. Knotts
1Department of Psychology, University of California, Los Angeles, USA
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  • ORCID record for J.D. Knotts
  • For correspondence: jeffreydknotts@gmail.com
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Abstract

Self-agency, the sense that one is the author or owner of one’s behaviors, is impaired in multiple psychological and neurological disorders, including functional movement disorders (FMDs), Parkinson’s Disease, alien hand syndrome, schizophrenia, and dystonia. Existing assessments of self-agency, many of which focus on agency of movement, can be prohibitively time-consuming and often yield ambiguous results. Here, we introduce a short online motion tracking task that quantifies movement agency through both first-order perceptual and second-order metacognitive judgments. The task assesses the degree to which a participant can distinguish between a motion stimulus whose trajectory is influenced by the participant’s cursor movements and a motion stimulus whose trajectory is random. We demonstrate the task’s reliability in healthy participants and discuss how its efficiency, reliability, and ease of online implementation make it a promising new tool for both diagnosing and understanding disorders of agency.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • https://github.com/ShiyunCMC/FMD_public

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted July 29, 2020.
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New measures of agency from an adaptive sensorimotor task
Shiyun Wang, Sivananda Rajananda, Hakwan Lau, J.D. Knotts
bioRxiv 2020.07.28.223503; doi: https://doi.org/10.1101/2020.07.28.223503
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New measures of agency from an adaptive sensorimotor task
Shiyun Wang, Sivananda Rajananda, Hakwan Lau, J.D. Knotts
bioRxiv 2020.07.28.223503; doi: https://doi.org/10.1101/2020.07.28.223503

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