But many find they help to maintain alertness and reduce headaches and eye strain from close work.

He had just found the correct position for maintaining alertness despite the late hour, when Data's voice broke the silence.

As the minutes dragged on, however, even those short breaks proved inadequate to help him maintain full alertness.

Drinking oolong tea or other caffeinated beverages throughout the day seems to maintain alertness and mental performance.

It was someone else's turn-no one could maintain perfect alertness for long.

The advisory did not call for any specific actions, other than maintaining alertness.

I want you to be aware of our fallen state, and to maintain constant alertness for evidence as to its nature.

The 26 input parameters to calculate driver fatigue include the time of day and reaction time to simple tests, which also serve to maintain alertness.

This swirling motion of the brain disrupts an area of nerve cells that maintains alertness.

In lower doses Iboga has a stimulant effect and is used to maintain alertness while hunting.