Various types of extra-sensory perception include:
- Paranormal perception of people, places or events by means of Clairvoyance also known as remote viewing, perception of other times through the medium of precognition, or retro cognition. This is usually considered to be just the same as clairvoyance, except that the perception travels through time. 
- Perception of aspects of others which most people cannot naturally perceive, such as aura reading, medical intuition, clairsentience and telepathy plus many more.
- Perception of aspects of things which most people cannot perceive, can be done by the means of psychometry, clairvoyance, clairaudience, clairsentience, clairalience and clairgustance.
- The ability to sense communications from and/or communicate with other people in very remote locations is known as telepathy.
- The ability to perceive environments or communications while psychically "at" a remote location by means of Out-of-body experiences, also known as astro-plaining, or while in alternate dimensions.
- The ability to communicate with the souls or spirits of people or animals who have died via mediumship, this is also known as a séance. Mediumship is a widely used term which primarily means that a person is able to communicate with deceased persons, or allow deceased persons to communicate through them by temporarily using his or her body, sending them into what is known as a trance.
- But mediumship may also include other paranormal abilities such as clairvoyance and clairaudience, the ability to have out-of-body experiences, and psychokinesis, physical mediumship.
A person capable of using ESP is often referred to as a psychic or as having psychic abilities.
The scientific study of paranormal phenomena such as ESP is called parapsychology, and includes other phenomena such as and reincarnation, near-death experiences, and psychokinesis.
Extra-sensory perception and hypnosis
When Franz Anton Mesmer and Grigori Rasputin were first popularizing hypnosis, the legend came about that a person who was hypnotized would be able to demonstrate ESP. Carl Sargent, a psychology major at the University of Cambridge, heard about the first claims of a hypnosis–ESP link and designed an experiment to test whether they had merit.
He recruited 40 fellow college students, none of whom made claims of having ESP, and then divided them into a group that would be hypnotized before being tested with a pack of 25 Zener cards, and a control group that would be tested with the same Zener cards. The test control subjects had an average score of 5 out of 25 right, exactly what chance would indicate.
The subjects who were hypnotized did more than twice as well, averaging a score of 11.9 out of 25 correctly. Sargent's own interpretation of the experiment is that ESP is related to a relaxed state of mind and a freer, more atavistic level of consciousness. Skeptics believe that Sargent's experiments lacked the proper controls.