Figure 1.

Electrographic Data Showing Sleep-Like Patterns in a 25-Year-Old Driver on the Delaying Evening Driving Schedule. This 20-second segment, recorded while the subject was driving, began at 2:24 a.m. There are slow, rolling eye movements (the large curves on the eye-movement tracings), a high level of alpha activity throughout the occipital tracing, and large peaks and troughs in the middle section of the central tracings, which are known as paroxysmal hypnagogic hypersynchrony.¹⁶