Activation of the human sensorimotor cortex during error-related processing: a magnetoencephalography study.
We studied error-related processing using magnetoencephalography (MEG). Previous event-related potential studies have documented error negativity or error-related negativity after incorrect responses, with a suggested source in the anterior cingulate cortex or supplementary motor area. We compared activation elicited by correct and incorrect trials using auditory and visual choice-reaction time tasks. Source areas showing different activation patterns in correct and error conditions were mainly located in sensorimotor areas, both ipsi- and contralateral to the response, suggesting that activation of sensorimotor circuits accompanies error processing. Additional activation at various other locations suggests a distributed network of brain regions active during error-related processing. Activation specific to incorrect trials tended to occur later in MEG than EEG data, possibly indicating that EEG and MEG detect different neural networks involved in error-related processes.
Stemmer
Brigitte
B
Centre de Recherche, Institut Universitaire de Gériatrie de Montréal, and Départment de Linguistique et Traduction, Université de Montréal, Montreal, Canada. b.stemmer@umontreal.ca
Vihla
Minna
M
Salmelin
Riitta
R
D000161:Acoustic Stimulation / Q000379:methods; D000328:Adult; D005260:Female; D006801:Humans; D015225:Magnetoencephalography; D008297:Male; D009044:Motor Cortex / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*