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  • Title: Dissociative patterns of foreperiod effects in temporal discrimination and reaction time tasks.
    Author: Los SA, Horoufchin H.
    Journal: Q J Exp Psychol (Hove); 2011 May; 64(5):1009-20. PubMed ID: 21213194.
    Abstract:
    This study examined whether the process of temporal preparation for a target stimulus is the same regardless of the task required by the target stimulus. To this end, the same variable-foreperiod design was used in a temporal discrimination task (Experiment 1) and a reaction time task (Experiment 2). In Experiment 1, both temporal sensitivity and perceived duration increased as a function of foreperiod, whereas in Experiment 2, foreperiod did not influence reaction time. Furthermore, both temporal sensitivity and perceived duration revealed an asymmetric sequential effect of foreperiod, but the pattern of this effect was opposite to the pattern observed in the reaction time task. Together these dissociative patterns of foreperiod effects suggest that the mechanism of temporal preparation depends on the task required by the target stimulus.
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