There are two different types of anesthesia; general anesthesia and regional anesthesia. This is due to the type of machine that performs the anesthesia and what the doctor does during the procedure. General anesthesia is considered more general than regional anesthesia and is generally what most people think of when the word "anesthesia" is mentioned. Regional anesthesia is more of a process of triggering and suppressing nerve signals and the surgical team can make adjustments at various points during the procedure. Anesthesia involves the temporary blocking of the brain's channels for feeling, including the perception of pain. It is a treatment that allows people to undergo surgery or to recover from an accident without the pain, nausea, or unconsciousness that would result from pain or injury. A general anesthetic provides a gradual blocking of the channels in the brain that allow painful sensations to flow to the brain. Drowsiness, however, is achieved through a type of anesthesia called regional anesthesia, which blocks the sensory processing of painful sensations. The differences in the methods of anesthesia are mainly in the methods of administration. Most people in surgery simply go under general anesthesia, although there are many other types, depending on the type of surgery.

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