In fMRI, hypotheses about how context modulates distributed patterns of information processing are often tested by comparing functional connectivity between neural regions A and B as a function of task conditions X and Y, which is termed context-modulated functional connectivity (FC).
The MTAS dataset was used to show that fractal scaling varies as a function of task complexity (Results: Effects of Task Complexity).
Vallesi, A., McIntosh, A. R. & Stuss, D. T. Overrecruitment in the aging brain as a function of task demands: evidence for a compensatory view.
We also used the multi-run VWMT data to show that fractal scaling increases continually as a function of task exposure.
First, HRV varied as a function of task demands (with the lowest values in the working memory task).
This article provides a characterization of the changes in fMRI signal activity associated with working-memory impairments following acute SD, and how these patterns change as a function of task complexity.
Finally, the NASA-TLX results showed larger cognitive workload in the execution condition than in the oddball control condition, and scores variations as a function of task.
The results of Experiment 2 indicated that RT increased as a function of task workload, the 2D position of the light-change target and the distance of the light-change target.
To evaluate the effects of task novelty (Results: Effects of Task Novelty), we measured the change in fractal scaling as a function of task exposure for TMT and SART, by comparing run-1 vs. run-2 for a single scanning session.
Specifically, the left POp showed better phoneme classification than auditory areas at medium (−6 to 8 dB SNRs) but not lower or higher noise levels in young adults, indicating a convex pattern of sensorimotor mapping as a function of task difficulty.
