W. H. R. Rivers and Henry Head

“ With the gradual return of sensibility to pain, cold, and heat, we noticed that the sensation tended to be widely diffused, and was not infrequently localized in some part remote from the point of stimulation (September, 1903) . If, for instance, ice was applied to the proximal portion of the forearm, a sensation of coldness was produced in the thumb. The site of this referred sensation remained the same, whatever the nature of the stimulus, provided it was one to which the affected area had become sensitive. ”

“ By September 9 (137 days after the operation) , the whole forearm had become sensitive to cold, and cold-spots were discovered not only in the upper patch on the forearm and in the terminal phalanx of the thumb, but also over the more distal portions of the affected area. The forearm still remained insensitive to heat, except in as far as temperatures above 50° C. produced a peculiar form of painful sensation, usually called "burning." ”

“ Electrical stimuli produced no sensation except when the muscles contracted; then the smallest visible movement was appreciated. To recognize pure movement, produced electrically, without a concomitant cutaneous sensation is a remarkable experience. ”