Unavoidable errors: A spatio-temporal analysis of time-course and neural sources of evoked potentials associated with error processing in a speeded task

摘要: The detection of errors is known to be associated with two successive neurophysiological components in EEG, an early time-course following motor execution: the error-related negativity (ERN/Ne) and late positivity (Pe). exact cognitive physiological processes contributing these EEG components, as well their functional independence, are still partly unclear. Furthermore, typically obtained conditions where rare events relative correct trials, thus presumably implicate other motivational besides error monitoring. Here, we investigated processing using high-density scalp ERPs advanced topographical analyses healthy participants, during a new Go/noGo task that led many within relatively short period time, yet without generating frustration or insufficient motivation. ERP results showed presence distinct electrophysiological markers monitoring (ERN/Ne Pe) this task, even though were practically frequent responses. Topographic mapping for first time both ERN/Ne Pe elicited specific distribution electrical activity responses (not just change amplitude electric signals), suggesting activation configuration intracranial generators detection. This was confirmed by additional dipole source localization, showing anterior cingulate cortex ERN/Ne, but more posterior regions Pe. Moreover, found that, across all magnitude correlated level state anxiety, subclinical range, whereas negatively total number positively improvement response speed on trials. By contrast, no significant relation between individual measures impulsivity. Taken together, data suggest reflect different processes, neural substrates cortex. While might primarily mediate detection, directly related behavioral adjustment based outcome current actions.