Stroop interference and the timing of selective response activation. Export

@article{citeulike:3198475, abstract = {OBJECTIVE: To examine the exact timing of selective response activation in a manual color-word Stroop task. METHODS: Healthy individuals performed two versions of a manual color-word Stroop task, varying in the probability of incongruent color-words, while EEG was recorded. RESULTS: Stroop interference effect was manifested as longer reaction times for incongruent relative to congruent color-words, and was larger in a task version where incongruent color-words were presented less frequently. Whereas the congruence between color display and word meaning did not affect average stimulus- and response-locked lateralized readiness potential (LRP) onset latencies nor response-locked LRP amplitudes, P3 peak latencies were longer and stimulus-locked LRPs were smaller for incongruent than congruent trials. CONCLUSIONS: These data are consistent with the idea that behavioral Stroop interference reflects delays in processing stages preceding color-based selective response activation in a subset of trials. They also do not exclude additional delays after color-based selective response activation, at least up until some 200ms before the overt response. SIGNIFICANCE: This chronometric analysis allows for a parcellation of the Stroop interference process that may be applied in psychopathology.}, address = {Department of Psychiatry, Radboud University Nijmegen Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands.}, author = {Lansbergen, Marieke M M. and Kenemans, J Leon L.}, citeulike-article-id = {3198475}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.clinph.2008.07.218}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/18762447}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=18762447}, day = {31}, doi = {10.1016/j.clinph.2008.07.218}, issn = {1388-2457}, journal = {Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology}, keywords = {erp, lrp, p3, stroop}, month = {August}, posted-at = {2008-09-06 03:38:29}, priority = {2}, title = {Stroop interference and the timing of selective response activation.}, url = {http://dx.doi.org/10.1016/j.clinph.2008.07.218}, year = {2008} }

TY - JOUR ID - citeulike:3198475 L3 - citeulike-article-id:3198475 N2 - OBJECTIVE: To examine the exact timing of selective response activation in a manual color-word Stroop task. METHODS: Healthy individuals performed two versions of a manual color-word Stroop task, varying in the probability of incongruent color-words, while EEG was recorded. RESULTS: Stroop interference effect was manifested as longer reaction times for incongruent relative to congruent color-words, and was larger in a task version where incongruent color-words were presented less frequently. Whereas the congruence between color display and word meaning did not affect average stimulus- and response-locked lateralized readiness potential (LRP) onset latencies nor response-locked LRP amplitudes, P3 peak latencies were longer and stimulus-locked LRPs were smaller for incongruent than congruent trials. CONCLUSIONS: These data are consistent with the idea that behavioral Stroop interference reflects delays in processing stages preceding color-based selective response activation in a subset of trials. They also do not exclude additional delays after color-based selective response activation, at least up until some 200ms before the overt response. SIGNIFICANCE: This chronometric analysis allows for a parcellation of the Stroop interference process that may be applied in psychopathology. JF - Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology SN - 1388-2457 AD - Department of Psychiatry, Radboud University Nijmegen Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands. TI - Stroop interference and the timing of selective response activation. KW - erp KW - lrp KW - p3 KW - stroop AU - Lansbergen, Marieke M AU - Kenemans, J Leon PY - 2008/08/31/ UR - http://dx.doi.org/10.1016/j.clinph.2008.07.218 ER -