Shock-Elicited Pain and Its Reduction by Concurrent Tactile Stimulation

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Science  21 May 1971:
Vol. 172, Issue 3985, pp. 866-867
DOI: 10.1126/science.172.3985.866


Human affective reactions to nociceptive electrical stimulation were attenuated by application of a tactile stimulus to the shocked site. No alteration was perceived when the same tactile stimulus was applied to a similar contralateral site. These results and a lack of alteration at sensation threshold demonstrate the effect to be more than simple masking and support the Melzack-Wall theory.