UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Prediction error and regularity detection underlie two dissociable mechanisms for computing the sense of agency

Wen, W; Haggard, P; (2020) Prediction error and regularity detection underlie two dissociable mechanisms for computing the sense of agency. Cognition , 195 , Article 104074. 10.1016/j.cognition.2019.104074. Green open access

[img]
Preview
Text
ControlDetection_Cognition.pdf - Accepted version

Download (703kB) | Preview

Abstract

The sense of agency refers to the subjective feeling of controlling one’s own actions, and through them, events in the outside world. According to computational motor control models, the prediction errors from comparison between the predicted sensory feedback and actual sensory feedback determine whether people feel agency over the corresponding outcome event, or not. This mechanism requires a model of the relation between action and outcome. However, in a novel environment, where this model has not yet been learned, the sense of agency must emerge during exploratory behaviours. In the present study, we designed a novel control detection task, in which participants explored the extent to which they could control the movement of three dots with a computer mouse, and then identified the dot that they felt they could control. Pre-recorded motions were applied for two dots, and the participants’ real-time motion only influenced one dot’s motion (i.e. the target dot). We disturbed participants’ control over the motion of the target dot in one of two ways. In one case, we applied a fixed angular bias transformation between participant’s movements and dot movements. In another condition, we mixed the participant’s current movement with replay of another movement, and used the resulting hybrid signal to drive visual dot position. The former intervention changes the match between motor action and visual outcome, but maintains a regular relation between the two. In contrast, the latter alters both matching and motor-visual correlation. Crucially, we carefully selected the strength of these two perturbations so that they caused the same magnitude of impairment of motor performance in a simple reaching task, suggesting that both interventions produced comparable prediction errors. However, we found the visuomotor transformation had much less effect on the ability to detect which dot was under one’s own control than did the nonlinear disturbance. This suggests a specific role of a correlation-like mechanism that detects ongoing visual-motor regularity in the human sense of agency. These regularity-detection mechanisms would remain intact under the linear, but not the nonlinear transformation. Human sense of agency may depend on monitoring ongoing motor-visual regularities, as well as on detecting prediction errors.

Type: Article
Title: Prediction error and regularity detection underlie two dissociable mechanisms for computing the sense of agency
Location: Netherlands
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.cognition.2019.104074
Publisher version: http://dx.doi.org/10.1016/j.cognition.2019.104074
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Sense of agency, Motor control, Regularity, Comparator, Internal model
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience
URI: https://discovery.ucl.ac.uk/id/eprint/10090271
Downloads since deposit
35Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item