With just a few instruments can be tested a phenomena like this one. You don't need more than a virtual reality and a stick.

Through the virtual reality, if we are pushed with a stick we have the feeling that we left our human body. This sensation is given by some sensors that we posses (vision, touch and balance) which works together.

This phenomena can be explain the sensation that has the dieing peoples when they see themselves or feel somewhere over the bad floating and then coming back suddenly.

Another test has been made on peoples, putting a fake hand on a table and their real hand somewhere under this fake hand under table. The real hand was touched with a stick and in the same time the fake one too to create a fake sensation. Afterwards, the fake hand was hit and the patient reacts and scares having a feeling that his real hand has been crashed.