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Depth of Temperature Change. 13° F Skin temperature decrease: Motor nerve conduction velocity dec 14%; sensory nerve conduction velocity dec 33%. 20° F Tissue temperature decrease: Acetylcholine concentration decreases by 20%.
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13° F Skin temperature decrease: Motor nerve conduction velocity dec 14%; sensory nerve conduction velocity dec 33%. 20° F Tissue temperature decrease: Acetylcholine concentration decreases by 20% 9°F Skin temperature decrease: Sensitivity of muscle spindles is decreased 60° F Skin temperature: Sensory function beings to return during re-warming. A F A B B C F C D D E E 58° F Skin temperature: Maximum analgesia occurs. 57° F Skin temperature: Maximum blood flow decrease occurs. Cold Benchmarks