The use of a motivational audiovisual stimulus was hypothesized to increase the predominance of high-frequency waves (14–30 Hz) in the premotor and motor areas of the brain as a means by which to compensate the detrimental effects of interoceptive sensory cues and corollary discharges on the efferent control of working muscles [48]. We also hypothesized that a motivational audiovisual stimulus would ameliorate the effects of fatigue-related symptoms by downregulating lowfrequency waves (4.0–13.9 Hz; theta and alpha frequencies) in the frontal and central regions of the cortex [16]. 2. Method