title: Electrophysiology of executive control in spoken noun-phrase production: Dynamics of updating, inhibiting, and shifting.
abstract: Previous studies have provided evidence that updating, inhibiting, and shifting abilities underlying executive control determine response time (RT) in language production. However, little is known about their electrophysiological basis and dynamics. In the present electroencephalography study, we assessed noun-phrase production using picture description and a picture-word interference paradigm. We measured picture description RTs to assess length, distractor, and switch effects, which have been related to the updating, inhibiting, and shifting abilities. In addition, we measured event-related brain potentials (ERPs). Previous research has suggested that inhibiting and shifting are associated with anterior and posterior N200 subcomponents, respectively, and updating with the P300. We obtained length, distractor, and switch effects in the RTs, and an interaction between length and switch. There was a widely distributed switch effect in the N200, an interaction of length and midline site in the N200, and a length effect in the P300, whereas distractor did not yield any ERP modulation. Moreover, length and switch interacted in the posterior N200. We argue that these results provide electrophysiological evidence that inhibiting and shifting of task set occur before updating in phrase planning.
authors.affiliation: Radboud University, Donders Institute for Brain, Cognition and Behaviour, Centre for Cognition, Montessorilaan 3, 6525 HR, Nijmegen, The Netherlands. Electronic address: K.Sikora@donders.ru.nl.
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Sikora
authors.affiliation: Radboud University, Donders Institute for Brain, Cognition and Behaviour, Centre for Cognition, Montessorilaan 3, 6525 HR, Nijmegen, The Netherlands.
authors.forename: Ardi
authors.initials: A
authors.lastname: Roelofs
authors.affiliation: Radboud University, Behavioural Science Institute, Montessorilaan 3, 6525 HR, Nijmegen, The Netherlands; Royal Dutch Kentalis, Petrus Dondersplein 1, 5271 AA, Sint-Michielsgestel, The Netherlands.
authors.forename: Daan
authors.initials: D
authors.lastname: Hermans
mesh_terms: D000328:Adult; D001921:Brain / Q000502:physiology*; D004569:Electroencephalography; D005071:Evoked Potentials; D056344:Executive Function / Q000502:physiology*; D005260:Female; D006801:Humans; D007266:Inhibition, Psychological; D008297:Male; D009483:Neuropsychological Tests; D011930:Reaction Time; D013060:Speech / Q000502:physiology*; D055815:Young Adult
keywords: executive control; language production