I thought you might be interested in a work I presented recently at the DRHA Brunel Conference entitled Gravity Shift. The work looks at how we might "read" gravity through witnessing another body. It looks to decentre the viewer's relationship to the installation through presentation of a dancer whose movement is affected by a moving pull of gravity.
you can see video documentation of the research and production HERE.
It would be good to start an online discussion about this, particular with respect to recent investigations in neuroscience.