Trauma affects physical as well as mental health. Most people who experience trauma will visit their regular doctor before seeking mental health care. This page includes resources for medical doctors to help treat various PTSD symptoms among civilian and military personnel; also covering brain injury, chronic pain, and sexual trauma. skip to page content
Definition: Subliminal Messages. A subliminal message is a signal or message embedded in another medium, designed to pass below the normal limits of the human mind's perception.
Telegraphy is the long-distance transmission of textual or symbolic messages without the physical exchange of an object bearing the message. Thus semaphore is a method of telegraphy, whereas pigeon post is not. Telegraphy requires that the method used for encoding the message be known to both sender and receiver. Many methods are designed according to the limits of the signalling medium used. The use of smoke signals, beacons, reflected light signals, and flag semaphore signals are early example