Analyse the SPSS file by running a mixed design ANOVA with a simple contrast for all three independent variables. You should see the following table. Why is there not a Mauchley's test significance value for the platform variable (i.e. whether the participants could see the force platform or not) ? 
Definitions:
Dull Pressure
A physical sensation often described in medical contexts as a consistent, moderate intensity force or weight felt in a particular area of the body.
Nociception
The sensory nervous system’s response to potentially harmful stimuli, leading to the perception of pain.
Phantom Limb Pain
The sensation of pain or discomfort in a limb or part of the body that has been amputated.
Causalgia
A persistent, severe burning pain that usually follows an injury to a nerve, characterized by sensitivity to touch and temperature changes.
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