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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: Clin J Pain. 2011 Nov;27(9):755–763. doi: 10.1097/AJP.0b013e31821c98ec

Fig. 1.

Fig. 1

Images of the multi-site vibrotactile stimulator. Stimulators are positioned by rotating each of the 4 independently positioned drums to maximize contact between fingers and the stimulator tips. During an experimental session, the subject was seated comfortably in a chair with the right arm resting on the arm rest attached to the head unit of the stimulator. Index and middle finger were positioned for D2 and D3 stimulation.