A medium is a person who can communicate with spirits in other dimensions. Mediums are often referred to as "psychic mediums," "spiritual mediums," or "intuitive mediums". While the term "psychic" is often used as a catch-all phrase for anyone who works in the paranormal, a medium is a psychic who has fine-tuned their extrasensory perception and can interface with spirits. Mediumship is much more involved than psychicism because a medium is opening themselves up to the higher frequency or energies on which spirit people vibrate.
There is a difference between a psychic and a medium. A psychic relies on their basic sense of intuition and psychic ability to gather information for the person being read, while a medium is able to feel and/or hear thoughts, voices, or mental impressions from the spirit world. Psychics tune into the energy of people or objects by feeling or sensing elements of their past, present, and future, while mediums bridge the gap between the living and the deceased.
During a séance, mediums are the central figure and are reputedly able to make contact with the world of spirits, especially while in a state of trance. Disembodied voices are said to speak, either directly or through the medium, and materialization of a disembodied spirit or of a specific part of a human body can allegedly take shape from a mysterious, viscous substance called ectoplasm that exudes from the medium’s body and subsequently disappears by returning to its original source.