An ERP Investigation of Response-related Processes

摘要: Several ERP correlates of response-monitoring have been investigated over the past two decades, with a number competing theories emerging. Models early negative components focus on explanations involving comparative process between error and correct responses or reinforcement-learning process. These are representative either specific error-processing generic system. models provide some structure to explain experimental outcomes, but fail account for much evidence, particularly in terms individual differences goal-directed behaviour, response awareness task-specific factors that may impact overall evaluation action intention. Whereas research evidence has indicated clear functional separation later response-related components, other researchers found associations where both impacted by prevailing conditions. Thus overarching aim this thesis was investigate task difficulty, conscientiousness, salience, late, components. Experiment 1 focused investigating demands, conscientiousness ERN/Ne, CRN, late Pe corresponding Pc mean amplitudes, standard arrowhead two-choice flanker task. Overall errors were elicit larger amplitude than responses. No effects evident at any stage process, however as outcome based small sample sizes interpretation approached cautiously. Conscientiousness differentiate component amplitudes error-related components. Overall, results suggest underlying personality traits play role errors. Experiment 2 designed consider difficulty using four-choice Response also investigated. Again, analysis related revealed significant differences. While showed very such did not basis definitive interpretation. Similar outcomes Experiment 1, differentiation apparent difficulty; however, instance only associated 3 aimed examine more complex language Since ability decode non-words fundamental completion task, decoding included design analyses. The initial data including salience no ERN/Ne CRN indicating be stimulus discriminability. However, when further analyses completed awareness, left right coronal measures differing picture began emerge. Early negativities suggesting goal directed behaviour should considered response- error-monitoring processes. Clear differential hemispheric processing evaluation. processes evidenced activity, points an explanation nature phonological task. Taken together, findings series experiments processes, takes place within context Furthermore, suggests all correct, combine offer fuller response-monitoring.