The phrase "a mentally demanding task" is correct and usable in written English.
You can use it to describe a task that requires significant cognitive effort or concentration.
Example: "Completing the advanced mathematics problem was a mentally demanding task that required hours of focus."
Alternatives: "a cognitively challenging task" or "a thought-intensive task."
They estimated that the nature of work for self-employed farmers has changed in the past two decades from primarily physically demanding towards more mentally demanding tasks.
Doing nothing provided a baseline value of 1.0 and juggling maths and word-memory (known from previous studies of human attention to be among the most mentally demanding tasks possible) provided an upper bound of 5.0.As might be expected, listening to the radio or to a book were the least distracting activities (with scores of 1.21 and 1.75).
"The collective evidence from a number of such studies suggests that the bilingual experience improves the brain's so-called executive function — a command system that directs the attention processes that we use for planning, solving problems and performing various other mentally demanding tasks".
However, as a possible reason for the stronger effects of CPT, it has been assumed that physical activity might lead to acute improvement of brain metabolism and plasticity; the mentally demanding tasks of the CT might then result in stronger improvement by making use of the enhanced brain metabolism and guiding the plasticity processes.
For a study published online in May in Medicine & Science in Sports & Exercise, they decided to tire volunteers' brains with a mentally demanding computer word game and see how well their bodies would perform afterward.
Here, we applied a graph theoretical approach to analyze such changes in the lower alpha (8 10 Hz) band of EEG data from 26 subjects undergoing a mentally-demanding test of sustained attention: the Psychomotor Vigilance Test.
"People who find themselves hungry after completing mentally-demanding tasks should consider adding a bout of exercise to their schedule to help curb their appetite," says Dhurandar.
You'll be more alert when you're on your feet, so stand up when you need to be able to think fast (such as when taking phone calls), and sit down when doing less mentally-demanding tasks.
One reason that could explain the better performance in the platform task is that, as Povinelli (2000) proposed, this is a less demanding task because individuals do not need to mentally represent the side into which they could insert the tool, only the consequence of their actions over the reward.
Ventilating a patient with an IPF exacerbation is a difficult and demanding task, and no 'cookbook' prescriptions can make the work easier for the intensivist.
