According to this assumption, "when there are two or more mental activities that need focal attention, it is not possible to allocate equal attentional resources to all of them simultaneously" (Ahmadian et al., 2015).
"People with more mental activities have more interconnected brains, which are able to deal better with potential damage," said Dr. Thomas Bak, a researcher at the University of Edinburgh in Scotland and a co-author of the study.
In an age when most jobs require intuitive decision-making, where more mental activities replace physical ones, traditional instruction and assessment is ineffective (i.e. the teacher demonstrates how to do something and the student who repeats the performance best receives a high grade).
Clue #2: As nervous systems grow more complex, mental activity grows more complex.
And so the stage was set for another career of reconciled contraries: the tactile, smelly, thoroughly physical process of copper-engraving and the more elusive mental activity of making poems.
One study found overlapping, but distinctly different, brain activity in patients diagnosed with conversion disorder and patients asked to "fake" the same illness, in this case a limp ankle, suggesting "more complex mental activity" in patients with conversion disorder.
It is widely accepted that consciousness or, more generally, mental activity is in some way correlated to the behavior of the material brain.
Women also reported more mental stimulating activities in their leisure time (with mean mental activity score of 23.2 in women as compared to 21.1 for men).Distributions for cognitive function (by each test component and stratified by sex) are presented in Figure 1.
Thus, the formulation of our hypotheses is more general: Mental activities are generated by coordinated activity in many brain regions.
And within their brains, something unexpected occurred: as each rat learned how to complete the maze more quickly, its mental activity decreased.
