In order to provide a more accurate differentiation between the manifestations of an engram and a secondary, below are listed detailed definitions of Pain and Sensation.
Pain (in its various forms) is the indication of an Engram.
Sensation (in its various forms) is the indication of a Secondary, which precedes the actual Engram.
Somatics = This is a general word for uncomfortable physical perceptions coming from the reactive mind. Its genus is early Dianetics and it is a general, common package word, used by Scientologists to denote “pain” or “sensation” with no difference made between them. To understand the source of these feelings, one should have a knowledge of engrams, ridges and other parts of the reactive bank. To the Scientologist anything is a Somatic if it emanates from the various parts of the reactive mind and produces an awareness of reactivity. Symbol som.
Pain = Pain is composed of heat, cold, electrical, and the combined effect of sharp hurting. If one stuck a fork in his arm, he would experience pain. When one uses Pain in connection with clearing one means awareness of heat, cold, electrical or hurting stemming from the reactive mind. According to experiments done at Harvard, if one were to make a grid with heated tubes going vertically and chilled tubes going horizontally and were to place a small current of electricity through the lot, the device, touched to a body, would produce the feeling of Pain. It need not be composed of anything very hot or cold or of any high voltage to produce a very intense feeling of pain. Therefore what we call Pain is itself heat, cold and electrical. If a pc experiences one or more of these from his reactive mind, we say he is experiencing Pain.
“Electrical” is the bridge between sensation and Pain and is difficult to classify as either PAIN or sensation when it exists alone. Symbol pn.
Sensation = All other uncomfortable perceptions stemming from the reactive mind are called Sensation. These are basically “pressure”, “motion”, “dizziness”, “sexual sensation”, and “emotion and misemotion”. There are others, definite in themselves but definable in these five general categories. If one took the fork in the pain definition above and pressed it against the arm, that would be “pressure”. “Motion” is just that, a feeling of being in motion when one is not. “Motion” includes the “winds of space”, a feeling of being blown upon especially from in front of the face. “Dizziness” is a feeling of disorientation and includes a spinniness, as well as an out-of-balance feeling. “Sexual sensation” means any feeling, pleasant or unpleasant, commonly experienced during sexual restimulation or action. “Emotion and Misemotion” include all levels of the complete tone scale except “pain”; emotion and misemotion are closely allied to “motion”, being only a finer particle action. A bank solidity is a form of “pressure”, and when the sensation of increasing solidity of masses in the mind occurs, we say “the bank is beefing up”. All these are classified as Sensation. Symbol sen.