Telepathy (Star Trek)
Telepathy is the communication of messages or thoughts directly from one
mind to another. The word is formed of two
Greek words meaning approximately "distant feeling." Generally, the images are received and processed by the brain in a manner similar to ordinary sensory input, so in essence a telepath "speaks" and "hears" perceptually. However, the ordinary
vocal and
auditory mechanisms are not employed. Telepathy exists across
space; it has appeared in various forms among various races.
A
touch telepath can communicate directly with the mind of another being, but only if in physical contact. The
Vulcan mind meld is a form of touch telepathy (although there is more to it than that).
Some telepaths can exchange thoughts only with others of their own species, some can send but not receive, and some can receive but not send. There are also combinations.
Betazoids, for one example, can both send and receive thought with other Betazoids, but with
alien minds they can only receive.
In some races, telepathy is present in all healthy individuals (those not born with congenital problems and not the victims of accidents or disease). In other species, such as
Humans, telepathy appears very rarely and is relatively weak (
Where No Man Has Gone Before). And certain species, notably the
Ferengi, are never telepathic as the structure of their brains prevents it. Often such species cannot be read even by telepaths normally capable of reading alien minds.
Telepathy makes possible some forms of interaction that would otherwise be impossible. The
Medusans are an incorporeal race so ugly (or perhaps merely so alien) that the sight of them drives humans insane. Interaction with them was very limited, until
2268, when Miranda Jones established a telepathic link with
Ambassador Kollos, proving that it could be done.
Extraordinarily powerful telepathic species exist. They are rare, but are extremely formidable, as they can immerse other minds in a realty of their own fabrication, much like a holodeck, but where the telepath makes all the rules. The
xenophobic Melkotians used their telepathic powers to punish aliens who encroached upon their space without permission (which, prior to
2268, they never extended).
Under rare circumstances, individuals can gain telepathic powers. In
2264, exposure to the galactic barrier altered Gary Mitchell, who developed telepathic powers. In
2266,
Captain Kirk and the
starship Enterprise took aboard a passenger,
Charles Evans. Subsequent events revealed that Evans had been granted various
psionic skills by the enigmatic
Thasians, so that he might survive on their world.
Telepathic races such as the Betazoids usually develop a moral code (sometimes making it actual law) that precisely dictates under what circumstances the powers may be used. Telepathy, misused, can be the ultimate invasion of privacy, and for that reason, it is feared by some.
Some telepaths can send and receive feelings and emotions. Sometimes this is part of a telepathic skill, and sometimes it is their only skill. In the latter case, individuals are referred to as
empaths. A notable empath is
Deanna Troi, daughter of a Betazoid and a human; she inherited a limited form of her mother's telepathic power.