Projectiology is the science that studies the projection of the consciousness and its effects. This phenomenon is also known as an out-of-body experience, astral projection or astral travel.

Experimentation shows that the consciousness (soul, spirit, ego, self, intelligent principle) is capable of disconnecting or disengaging themselves from the physical body by their own will, determination or with specific techniques. In this way, they project themselves out of the physical body. In lucid projections, the consciousness has the ability to identify, verify and differentiate between various projective self-experiences with varying levels of lucidity, in different dimensions.