The stability of error-related brain activity with increasing trials Export

@article{citeulike:5785166, abstract = {The error-related negativity (ERN) and error positivity (Pe) are increasingly being examined as neural correlates of response monitoring. The minimum number of error trials included in grand averages varies across studies; indeed, there has not been a systematic investigation on the number of trials required to obtain a stable ERN and Pe. In the current study, the ERN and Pe were quantified as two random trials were added to participants' (N=53) ERP averages. Adding trials increased the correlation with the grand average ERN and Pe; however, high correlations (rs\>.80) were obtained with only 6 trials. Internal reliability of the ERN and Pe reached moderate levels after 6 and 2 trials and the signal-to-noise ratio of the ERN and Pe did not change after 8 and 4 trials, respectively. Combined, these data suggest that the ERN and Pe can be quantified using a minimum of between 6 and 8 error trials.}, address = {Department of Psychology, Stony Brook University, Stony Brook, New York, USA}, author = {Olvet, Doreen M. and Hajcak, Greg}, citeulike-article-id = {5785166}, citeulike-linkout-0 = {http://dx.doi.org/10.1111/j.1469-8986.2009.00848.x}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/122465351/ABSTRACT}, doi = {10.1111/j.1469-8986.2009.00848.x}, issn = {1469-8986}, journal = {Psychophysiology}, keywords = {ern, erp, method}, number = {5}, pages = {957--961}, posted-at = {2009-09-15 07:00:55}, priority = {2}, title = {The stability of error-related brain activity with increasing trials}, url = {http://dx.doi.org/10.1111/j.1469-8986.2009.00848.x}, volume = {46}, year = {2009} }

TY - JOUR ID - citeulike:5785166 L3 - citeulike-article-id:5785166 N2 - The error-related negativity (ERN) and error positivity (Pe) are increasingly being examined as neural correlates of response monitoring. The minimum number of error trials included in grand averages varies across studies; indeed, there has not been a systematic investigation on the number of trials required to obtain a stable ERN and Pe. In the current study, the ERN and Pe were quantified as two random trials were added to participants' (N=53) ERP averages. Adding trials increased the correlation with the grand average ERN and Pe; however, high correlations (rs>.80) were obtained with only 6 trials. Internal reliability of the ERN and Pe reached moderate levels after 6 and 2 trials and the signal-to-noise ratio of the ERN and Pe did not change after 8 and 4 trials, respectively. Combined, these data suggest that the ERN and Pe can be quantified using a minimum of between 6 and 8 error trials. IS - 5 JF - Psychophysiology SN - 1469-8986 AD - Department of Psychology, Stony Brook University, Stony Brook, New York, USA EP - 961 TI - The stability of error-related brain activity with increasing trials VL - 46 SP - 957 KW - ern KW - erp KW - method AU - Olvet, Doreen AU - Hajcak, Greg PY - 2009/// UR - http://dx.doi.org/10.1111/j.1469-8986.2009.00848.x ER -