I CAN Explain the Gate Control Theory.

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Presentation transcript:

I CAN Explain the Gate Control Theory

Ashley Blocker (right) feels neither pain Pain tells the body that something has gone wrong. Usually pain results from damage to the skin and other tissues. A rare disease exists in which the afflicted person feels no pain. OBJECTIVE 18| State the purpose of pain, and describe the biopsychosocial perspective on pain. AP Photo/ Stephen Morton Ashley Blocker (right) feels neither pain nor extreme hot or cold.

Gate-Control Theory Melzak and Wall (1965, 1983) proposed that our spinal cord contains neurological “gates” that either block pain or allow it to be sensed. One way to treat chronic pain is to stimulate it through massage by electrical stimulation or acupuncture. Rubbing causes competitive stimulation to pain thus reduces its effect. Gary Comer/ PhototakeUSA.com

Gate Control Theory Spinal cord contains small nerve fibers that conduct most pain signals It also contains larger fibers that conduct most other sensory signals When tissue is injured small nerve fibers activate and open the neural gate Large fiber activity shuts that gate Thus if you stimulate gate closing activity by massage electrical signal or acupuncture you can disrupt the pain message. The brain can close this gate too!

Fast fibers vs. Slow fibers Fast fibers deliver most of the sensory information to the brain (on the small nerve fibers) Very intense stimuli (pain) send strong signals on the slow fibers (on the large nerve fibers)

Biopsychosocial Influences