Moderate variability in stimulus presentation improves motor response control

To examine the impact of interstimulus “jitter” (i.e., randomization of the interval between successive stimulus events) on response control during continuous task performance, 41 healthy adults completed four go/no-go tasks that were identical except for interstimulus interval (ISI) jitter: a 0% jitter task with a fixed (1,000-ms) ISI, a 10% jitter task with an ISI range of 900–1,100 ms, a 30% jitter task with an ISI range of 700–1,300 ms, and...