At a glance
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The Individual Response of Healthy Individuals to Mental Fatigue: a Randomized Crossover Trial Investigating the Influence of Internal Factors in the Effects of Mental Fatigue on Human Performance
In Brief
A clinical study evaluating Stroop task and Documentary for Mental Fatigue. Completed, enrolled 142 participants across 1 site.
Detailed Summary
The objective of the present study is to confirm and map out the presence of interindividual differences in the effect of mental fatigue on both physical and cognitive performance, and to see if these differences are related to individual factors of the participants.
Study Details
Timeline
Interventions
The task is partitioned in 4 blocks of 360 stimuli and each word will be presented on screen in 34 point font for 1000 ms with an inter-stimulus interval based on their performance on the Stroop max test. This max test will be performed during the familiarization trial, and is divided in blocks of 96 stimuli. After each block, the accuracy (ACC) will be calculated. When ACC \> 85%, the difficulty of the Stroop task will be increased by decreasing the stimulus presentation time (SPT). If ACC \< 85%, this block will be considered as an 'error' and the subject must redo the block without changing the SPT. The first block will have a SPT of 1500 ms. When the required ACC is achieved, the SPT will decrease in the following order: 1100, 900, 800,… to determine the individualized cognitive load. When the subject makes 3 errors in a row, or 5 errors during the whole trial, the trial will end. The SPT of the last block will be considered as the maximum capacity of that individual.
In order to avoid under- and over-arousal, participants will have the opportunity to choose between several documentaries. The participants will also receive a list of the available documentaries (based on selections from Netflix and Disney+) after the familiarization trial so that the trial can go as smoothly as possible.