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

Violating body movement semantics: Neural signatures of self-generated and external-generated errors

Padrao, G; Gonzalez-Franco, M; Sanchez-Vives, MV; Slater, M; Rodriguez-Fornells, A; (2016) Violating body movement semantics: Neural signatures of self-generated and external-generated errors. NeuroImage , 124 (Part A) pp. 147-156. 10.1016/j.neuroimage.2015.08.022. Green open access

[thumbnail of virtual error NI rev1 1.pdf]
Preview
Text
virtual error NI rev1 1.pdf - Accepted Version

Download (7MB) | Preview

Abstract

How do we recognize ourselves as the agents of our actions? Do we use the same error detection mechanisms to monitor self-generated vs. externally imposed actions? Using event-related brain potentials (ERPs), we identified two different error-monitoring loops involved in providing a coherent sense of the agency of our actions. In the first ERP experiment, the participants were embodied in a virtual body (avatar) while performing an error-prone fast reaction time task. Crucially, in certain trials, participants were deceived regarding their own actions, i.e., the avatar movement did not match the participant's movement. Self-generated real errors and false (avatar) errors showed very different ERP signatures and with different processing latencies: while real errors showed a classical frontal-central error-related negativity (Ne/ERN), peaking 100 ms after error commission, false errors elicited a larger and delayed parietal negative component (at about 350–400 ms). The violation of the sense of agency elicited by false avatar errors showed a strong similarity to ERP signatures related to semantic or conceptual violations (N400 component). In a follow-up ERP control experiment, a subset of the same participants merely acted as observers of the avatar correct and error movements. This experimental situation did not elicit the N400 component associated with agency violation. Thus, the results show a clear neural dissociation between internal and external error-monitoring loops responsible for distinguishing our self-generated errors from those imposed externally, opening new avenues for the study of the mental processes underlying the integration of internal and sensory feedback information while being actors of our own actions.

Type: Article
Title: Violating body movement semantics: Neural signatures of self-generated and external-generated errors
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.neuroimage.2015.08.022
Publisher version: https://doi.org/10.1016/j.neuroimage.2015.08.022
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: Error monitoring, Event-related potential, Body ownership, Agency, Motor control
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/10073421
Downloads since deposit
Loading...
449Downloads
Download activity - last month
Loading...
Download activity - last 12 months
Loading...
Downloads by country - last 12 months
Loading...

Archive Staff Only

View Item View Item