Pain Gate Ddsc 018 -

Small Nerve Fibers (A-delta and C fibers): These carry pain signals. When they are active, they "open" the gate, allowing the brain to perceive pain.Large Nerve Fibers (A-beta fibers): These carry signals related to touch and vibration. When these fibers are stimulated, they "close" the gate, blocking the pain signals from reaching the brain.

Large, heavily myelinated nerve fibers that transmit non-painful tactile sensations like touch, vibration, and pressure very quickly. pain gate ddsc 018

Key points of the theory:

Nociception: dull, aching, burning, chronic pain ("second pain"). The Gating Mechanism: How the Circuit Works Small Nerve Fibers (A-delta and C fibers): These

: They stimulate the "gatekeeper" interneurons, which then block the transmission of pain signals. This closes the gate . 3. Descending Controls This closes the gate

The theory was revolutionary because it was the first to incorporate the into pain perception. Gate Control Theory of Pain - Physiopedia