Visual alertness was operationalised as the duration for which the resident visually appeared to be alert.
So is alertness to strangers' behavior.
Among the survival characteristics that an inspector of Herdwick tups (rams) looks for when he drives from farm to farm around the Lake District are alertness, mobility and strong legs.
The individual behavioral items analyzed for this study were alertness, consolability, self-quieting activity, hand-to-mouth facility, irritability, elicited and spontaneous activity, and motor maturity.
The dependent variables were alertness, hedonic tone, and anxiety.
Cognitive control variables were alertness (TAP), dotting and tapping, all correlating with the cognitive target variables but likely differently regulated.
This basalocortical pathway is known to be involved in alertness and cognitive functions [2].
Heinrich Böll, who went on to become one of Germany's most significant postwar writers, wrote to his family in the hope of topping up on a drug called Pervitin that according to its packaging helped "maintain wakefulness" and was to be used as an "alertness aid".
But what about drugs to enhance memory or alertness, to be taken before a test -- isn't this akin to an athlete unethically taking steroids before a race?
Though several studies have reported human alertness to be affected by the intensity and spectral composition of ambient light, the mechanism behind this effect is still largely unclear, especially for daytime exposure.
