Frequent speeders were significantly more likely than non-frequent speeders to agree with several statements expressing risky behaviors, including driving without enough sleep, speeding to reach destination in time, and using a cell phone for personal purposes while driving.
The post-sleep speed data were different from the post-sleep accuracy data insomuch as speed increased early in the post-sleep test from trial 1 (26.6 sequences) to trial 4 (29.1 sequences; F 1,43) = 27.08, P<0.0001).
Like post-sleep accuracy on the later trials though, post-sleep speed did not increase thereafter: Speed did not increase at all from post-sleep trial 4 (29.1 sequences) to trial 12 (28.2 sequences).
Out of the church and on the way to the graveyard, the congregation sidesteps elephant seals sleeping like speed bumps across the track.
In contrast to off-line learning across sleep, RT speeding across practice was found for each response number (Time-on-task×Response Number, F(6/198) = 1.17, p>0.3), which was valid for both sleep groups (Sleep Group×Time-on-task×Response Number F(6/198) = 0.97, p>0.4).
Her sleep-deprived, speed-fuelled working methods may sound extreme but it's hard to argue with the results.
Speed had somewhat different dynamics from accuracy (Fig. 3B), although the effects of sleep on the speed and accuracy of the 24 hr. group were similar, as they were for the 12 hr.
All patients had four or more of the following neurocognitive symptoms: impaired cognitive functioning, slowed processing speed, sleep disturbance, short-term memory deficit, fatigue and symptoms consistent with depression.
I tested the effect of combining shorter-than-usual 10-minute ice baths one hour prior to bed, timed with a countdown kitchen timer, with low-dose melatonin (1.5 - 3 mg) on regulating both sleep regularity and speed to sleep.
Correspondingly, there was no improvement in speed across sleep (last pre-sleep trial: 22.8 sequences; first post-sleep trial: 21.6 sequences).
