The phrase "alertness level" is correct and usable in written English.
It can be used to describe the degree of awareness or attentiveness of an individual, often in contexts related to psychology, health, or performance.
Example: "The study measured the participants' alertness level before and after the intervention to assess its effectiveness."
Alternatives: "state of alertness" or "level of awareness".
Aha, now what is this on page 186 on the Driver Alert Warning with its steaming coffee cup: 'It monitors your alertness level based upon your driving behaviour in relation to the lane markings and other factors.' And I thought it was triggered by the length of time you'd been driving non-stop.
Your research has shown that a short nap for doctors and nurses working night shifts improved their mood and alertness level.
The goal of this multi-method study was to examine the validity (accuracy) of the pupillometric Alertness Level Test (ALT) as a physiologic measure of sleepiness.
If you choose to skate with a portable music player, keep the volume low enough and your alertness level high enough to be aware of what other skaters are doing.
The objective of this study is the development and evaluation of efficient neurophysiological signal statistics, which may assess the driver's alertness level and serve as potential indicators of sleepiness in the design of an on-board countermeasure system.
In this paper, a methodology for assessing alertness level based on a single EEG channel (Pz Oz) is proposed, allowing the reduction of the required hardware and the computational time of the algorithms, besides being more portable than multi-channel based ones.
The reported levels of alertness during the course of the experiment showed a development in alertness levels from alert to sleepy, which was also similar between groups (Figure 3A).
Besides, the sufferer's alertness levels decrease significantly.
Here, based on previous studies with adult neurological patients who show very severe inattention to the left, we examine whether any spatial bias in ADHD may be modulated by changes in alertness levels.
Startle response, PPI, heart rate response, galvanic skin response, and changes in self-report ratings of alertness levels and affective states (arousal and valence) were assessed.
Those include the effects of distance and change of physical environment on alertness levels, problems with ground position light signals and the passenger approaches at the stations, increased risks during engineering works and possessions.
