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Predictive information and error processing: The role of medial-frontal cortex during motor control

Authors


  • The first author thanks the Michael Smith Foundation for Health Research for financial support for this research. This research was supported in part by National Sciences and Engineering Research Council Discovery Grant 312409-05.

  • Supplemental material is available at: http://web.uvic.ca/psyc/braincoglab/lab_research.html

Address reprint requests to: Olav Krigolson, Department of Psychology, University of Victoria, PO Box 3015 STN CSC, Victoria, BC, V8W 3P1, Canada. E-mail: olav@uvic.ca

Abstract

We have recently provided evidence that an error-related negativity (ERN), an ERP component generated within medial-frontal cortex, is elicited by errors made during the performance of a continuous tracking task (O.E. Krigolson & C.B. Holroyd, 2006). In the present study we conducted two experiments to investigate the ability of the medial-frontal error system to evaluate predictive error information. In two experiments participants used a joystick to perform a computer-based continuous tracking task in which some tracking errors were inevitable. In both experiments, half of these errors were preceded by a predictive cue. The results of both experiments indicated that an ERN-like waveform was elicited by tracking errors. Furthermore, in both experiments the predicted error waveforms had an earlier peak latency than the unpredicted error waveforms. These results demonstrate that the medial-frontal error system can evaluate predictive error information.

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