In such situations, the clairvoyant medium clearly understands that it is the powerful spirit and not he who is trotting out the facts so fast. It is in fact the spirit, which is providing him with facts, names of the persons and events, dates and other related information. The job of the clairvoyant medium then boils down to just working in tandem with this spiritual energy.
Try actively communicating with spirits. A good way to start is by finding a medium ship circle, a group of mediums who gather to receive messages from the other side. This will give you an introduction to the setting that should be arranged for effective communication. Once you're comfortable with the process, try it on your own, or invite other mediums to join you.
Senses used by mental mediums are sometimes defined differently from in other paranormal fields. A medium is said to have psychic abilities but not all psychics function as mediums. The term clairvoyance, for instance, may include seeing spirit and visions instilled by the spirit world. The Parapsychological Association defines "clairvoyance" as information derived directly from an external physical source.