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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: J Psychosom Res. 2014 Apr 16;76(6):458–464. doi: 10.1016/j.jpsychores.2014.04.001

Figure 1. Study Procedure.

Figure 1

The protocol included 10 visual sessions and 10 auditory sessions. The computer program used a locked periodic design in which the visual or auditory stimuli were presented to the participants during epochs of 60 seconds per session. Each stimulus lasted for 500 milliseconds (ms), and the inter-stimulus interval lasted 2,500 ms. Performance-based fatigability was computed based on the reaction time to the stimulus over sessions. Perceived fatigability was computed based on VAS-F before and after fatigue manipulation task.