Development

The Gate Control Theory (GCT) was developed in 1965 in order to define the relationship between pain and emotion.

The GCT explained that a gating mechanism occurs in the spinal cord.

Pain impulses are transmitted by A delta and C nerve fibers.

The pain impulses travel to the substantia gelatinosa area of the spinal cord.

The substantia gelatinosa allows for inhibiting or prohibiting of pain.

If the substantia gelatinosa inhibits pain, the gate is closed, and no impulses are sent to the brain.

If the gate is open, pain impulses are sent to the brain.

An individual's thoughts and emotions are influenced by the awareness of pain.

(McEwen & Wills, p. 317, 2011)