The communication concerned is, of course, postulated to be occurring during the “click out phase” in the oscillation of the energy fields comprising the subatomic particles concerned.
However, use of the Hemi-sync tapes at this point may be less a factor in actually achieving the out-of-body state than it is a matter of focusing the brain enough so that a residual memory of having naturally achieved an out-of-body state is carried into the waking state.
The effect of this is to put the body in a state of complete stillness so far as the skeletal muscle structure Is concerned, thereby further promoting the state of deep rest needed to eliminate the bifurcation echo.