Diffusion model for one-choice reaction-time tasks and the cognitive effects of sleep deprivation.

ABSTRACT: One-choice reaction-time (RT) tasks are used in many domains, including assessments of motor vehicle driving and assessments of the cognitive/behavioral consequences of sleep deprivation. In such tasks, subjects are asked to respond when they detect the onset of a stimulus; the dependent variable is RT. We present a cognitive model for one-choice RT tasks that uses a one-boundary diffusion process to represent the accumulation of stimulus information. When the accumulated evidence reaches a decision criterion, a response is initiated. This model is distinct in accounting for the RT distributions observed for one-choice RT tasks, which can have long tails that have not been accurately captured by earlier cognitive modeling approaches. We show that the model explains performance on a brightn

SUBMITTER: Ratcliff R 

PROVIDER: S-EPMC3131321 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature