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Tieges, Zoe; Snel, Jan; Kok, Albert; Ridderinkhof, K. Richard – Brain and Cognition, 2009
The effects of a 3 mg/kg body weight (BW) dose of caffeine were assessed on behavioral indices of response inhibition. To meet these aims, we selected a modified AX version of the Continuous Performance Test (CPT), the stop task, and the flanker task. In three double-blind, placebo-controlled, within-subjects experiments, these tasks were…
Descriptors: Body Weight, Performance Tests, Inhibition, Cognitive Processes
Meiran, Nachshon; Friedman, Gilad; Yehene, Eynat – Brain and Cognition, 2004
Ten Parkinson's Disease (PD) patients and 10 control participants were tested using a task-switching paradigm in which there was a random task sequence, and the task was cued in every trial. Five PD patients showed a unique error profile. Their performance approximated guessing when accuracy was dependent on correct task identification, and was…
Descriptors: Patients, Neurological Impairments, Models, Task Analysis