RT Journal Article
SR Electronic
T1 New measures of agency from an adaptive sensorimotor task
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 2020.07.28.223503
DO 10.1101/2020.07.28.223503
A1 Wang, Shiyun
A1 Rajananda, Sivananda
A1 Lau, Hakwan
A1 Knotts, J.D.
YR 2020
UL http://biorxiv.org/content/early/2020/07/29/2020.07.28.223503.abstract
AB 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 StatementThe authors have declared no competing interest.