title: The locus of temporal preparation effects: evidence from the psychological refractory period paradigm.
abstract: In reaction time (RT) tasks, responses are especially fast when participants can anticipate the onset of an imperative response signal. Although this RT facilitation is commonly attributed to temporal preparation, it is unclear whether this preparation shortens the duration of early or late processes. We used the effect propagation property of the psychological refractory period paradigm to localize the effect of temporal preparation. Manipulation of temporal uncertainty affected the RT of Task 1, regardless of the level of stimulus onset asynchrony (SOA). Consistent with the prediction of an early locus of temporal preparation, this effect propagated completely to the RT of Task 2 at short SOAs, but propagation diminished virtually to zero at long SOAs.
authors.affiliation: Psychologisches Institut, Universität Tübingen, Friedrichstr. 21, 72072 Tübingen, Germany. karin.bausenhart@uni-tuebingen.de
authors.forename: Karin M
authors.initials: KM
authors.lastname: Bausenhart
authors.forename: Bettina
authors.initials: B
authors.lastname: Rolke
authors.forename: Steven A
authors.initials: SA
authors.lastname: Hackley
authors.forename: Rolf
authors.initials: R
authors.lastname: Ulrich
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D011930:Reaction Time; D012033:Refractory Period, Psychological