Body Schema Modulation and Tool Embodiment in Real and Virtual Environments

Tool embodiment occurs when the neural representation of the body (i.e., body schema) incorporates the representation of a tool following interaction with the tool. The present thesis examined if tool embodiment can occur through different mediums of tool interactions. Participants completed a response time task (sensitive to tool embodiment) before and after interacting with one of three tools. In the physical tool interaction, participants held a real plastic rake to move a ball around a course. In two virtual tool interactions, an avatar holding a virtual rake was projected on to a screen and participants used a keyboard or a Wiiâ ˘ remote to move the virtual rake. Response time results indicate that prior to interaction, the rake was processed as separate from the body. However, through real and virtual tool experience, the rake was embodied such that it was incorporated into the body schema and processed as an extension of the hand.M.Sc