On the relationship of P3a and the Novelty-P3

@article{citeulike:278249, abstract = {Deviant stimuli give rise to a late positive ERP component with latencies from 250 to 400 ms. Target deviants elicit a P300 with maximum amplitude over parieto-central recording sites while the \‘P300\’ elicited by deviant nontarget stimuli occurs somewhat earlier and shows a more frontally-oriented scalp distribution. Two varieties of frontal P300s have been described, elicited either by rare stimuli (target or nontarget) presented in a two-stimulus oddball task (P3a) or by infrequent, unrecognizable stimuli presented in the context of a three-stimulus oddball task (Novelty-P3). The Novelty-P3 has been observed in a number of subsequent studies; the P3a has not been extensively studied and both its significance and existence have been called into question. The present report describes a replication of two prototypical studies with \‘frontal\’ P3s observed in each context. Application of factor analysis to the two sets of ERP waveforms does not support a distinction between these two components.}, author = {Simons, Robert F. and Graham, Frances K. and Miles, Mark A. and Chen, Xun }, citeulike-article-id = {278249}, doi = {10.1016/S0301-0511(01)00078-3}, journal = {Biological Psychology}, keywords = {cksearch, erp, oddball, p300}, month = {June}, number = {3}, pages = {207--218}, posted-at = {2005-08-10 23:54:37}, priority = {2}, title = {On the relationship of P3a and the Novelty-P3}, url = {http://dx.doi.org/10.1016/S0301-0511(01)00078-3}, volume = {56}, year = {2001} }

TY - JOUR ID - citeulike:278249 L3 - citeulike-article-id:278249 TI - On the relationship of P3a and the Novelty-P3 JF - Biological Psychology VL - 56 IS - 3 SP - 207 EP - 218 N2 - Deviant stimuli give rise to a late positive ERP component with latencies from 250 to 400 ms. Target deviants elicit a P300 with maximum amplitude over parieto-central recording sites while the ‘P300’ elicited by deviant nontarget stimuli occurs somewhat earlier and shows a more frontally-oriented scalp distribution. Two varieties of frontal P300s have been described, elicited either by rare stimuli (target or nontarget) presented in a two-stimulus oddball task (P3a) or by infrequent, unrecognizable stimuli presented in the context of a three-stimulus oddball task (Novelty-P3). The Novelty-P3 has been observed in a number of subsequent studies; the P3a has not been extensively studied and both its significance and existence have been called into question. The present report describes a replication of two prototypical studies with ‘frontal’ P3s observed in each context. Application of factor analysis to the two sets of ERP waveforms does not support a distinction between these two components. KW - cksearch KW - erp KW - oddball KW - p300 AU - Simons, Robert AU - Graham, Frances AU - Miles, Mark AU - Chen, Xun PY - 2001/06/01/ UR - http://dx.doi.org/10.1016/S0301-0511(01)00078-3 ER -