Title :
Two-point discrimination threshold as a function of frequency and polarity at fingertip by electrical stimulation
Author :
Hayashi, Kouki ; Ninjouji, Takashi
Author_Institution :
Biol. Signal Process. Laboratory, NTT DoCoMo, Inc., Japan
Abstract :
The effect of frequencies and current polarity of electrical stimulation to fingertip was investigated toward realizing electrocutaneous display. We measured the two-point discrimination threshold of electrical stimulation with 1.0 mm diameter electrodes spaced by 2.0 mm. The waveform pattern with the smallest two-point discrimination threshold was anode at frequencies from 200 to 400 Hz; most subjects could clearly discriminate the physical separation of 4 mm, some of them could discriminate 2 mm with optimized electrical stimulation.
Keywords :
bioelectric phenomena; biomedical electrodes; display devices; handicapped aids; haptic interfaces; current polarity effects; electrical stimulation; electrocutaneous display; electrodes; fingertip; frequency effects; two-point discrimination threshold; Anodes; Displays; Electric variables measurement; Electrical stimulation; Electrodes; Frequency; Internet; Laboratories; Legged locomotion; Virtual reality; Tactile; electrical stimulation; electrocutaneous; two-point discrimination threshold;
Conference_Titel :
Engineering in Medicine and Biology Society, 2004. IEMBS '04. 26th Annual International Conference of the IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8439-3
DOI :
10.1109/IEMBS.2004.1404186
