alertness

Part of the... "heightened alertness" that serves me well, in other contexts.

It's more a habit of thinking than a constant state of conscious alertness.

“But if you look at how they actually do on tests of mental alertness and performance, they continue to go downhill.

Caffeine tolerance reduces the sense of freshness, alertness, energy etc that coffee gives for any given dose.

What about the effect of eating breakfast on mental alertness, productivity, etc?

Caffeine is a stimulant, and generally speaking, it has a host of positive effects on your processing speed, alertness, etc.

Only their own incompetence and the alertness of the passengers prevented tragedy--the military had nothing to do with it.

First, it impairs attention, alertness, concentration, reasoning, and problem solving.

Maintaining alertness in the face of sleep probably has a hard-wired association at quite a deep level with self-preservation, and I can see how that would explain in some way these findings.

As a contractor, I've sat in different offices and witnessed those around me experience 'the dip', whereas I can now soldier on through the day from morning to evening with consistent alertness and focus levels.

I had always assumed that if I used it regularly, my body would eventually counteradjust so that I would require coffee just to bring me back to my original baseline level of alertness.

When they can convincingly simulate that level of alertness and presence, when they can build a machine that appears at least as conscious as my pet rat did -- when they produce the tiniest amount of genuine gold -- I'll concede the singularity may be on the horizon.

The entertainments manufacturers know that their products will be consumed with alertness even when the customer is distraught, for each of them is a model of the huge economic machinery which has always sustained the masses, whether at work or at leisure which is akin to work.