PMID- 30306246 OWN - NLM STAT- MEDLINE DCOM- 20190510 LR - 20200225 IS - 1432-1106 (Electronic) IS - 0014-4819 (Linking) VI - 237 IP - 1 DP - 2019 Jan TI - Effects of transcutaneous electrical nerve stimulation and visuotactile synchrony on the embodiment of an artificial hand. PG - 81-89 LID - 10.1007/s00221-018-5398-9 [doi] AB - The rubber hand illusion (RHI) is an experimental paradigm known to produce a bodily illusion. Transcutaneous electrical nerve stimulation (TENS) combined with the RHI induces a stronger illusion than the RHI alone. Visuotactile stimulus synchrony is an important aspect of the RHI. However, the effect of TENS and visuotactile stimulus synchrony in TENS combined with the RHI remains unknown. The purpose of this study was to investigate the effects of TENS and visuotactile stimulus synchrony on the embodiment of an artificial hand when using TENS combined with the RHI. The participants underwent four experimental conditions in random order: TENS/noTENS x Synchronous/Asynchronous. TENS was set at an intensity such that it generated a feeling of electrical paresthesia in the radial nerve area of the hand but did not cause pain, i.e., 100-Hz pulse frequency, 80-micros pulse duration, and a constant pulse pattern. A visuotactile stimulus, either temporally synchronous or asynchronous, was generated using paintbrush strokes. To evaluate the outcome measures, the participants completed a questionnaire report and proprioceptive drift assessments (motor response and perceptual response). There were significant main effects of TENS and visuotactile synchrony, but no interaction between these factors, on the results of the questionnaire and the perceptual response. In contrast, there was no significant effect on the result of the motor response. These findings indicate that TENS and visuotactile synchrony might affect differently the embodiment of an artificial hand when using TENS combined with the RHI. FAU - Asao, Akihiko AU - Asao A AUID- ORCID: 0000-0001-8994-833X AD - Department of Occupational Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata, Japan. asao@nuhw.ac.jp. FAU - Shibuya, Kenichi AU - Shibuya K AD - Department of Health and Nutrition, Faculty of Health Sciences, Niigata University of Health and Welfare, Niigata, Japan. FAU - Yamada, Kazuki AU - Yamada K AD - Department of Occupational Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata, Japan. FAU - Kazama, Yuina AU - Kazama Y AD - Department of Occupational Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata, Japan. LA - eng PT - Journal Article DEP - 20181010 PL - Germany TA - Exp Brain Res JT - Experimental brain research JID - 0043312 SB - IM MH - Adult MH - *Artificial Limbs MH - Body Image MH - Female MH - Hand MH - Humans MH - Illusions/*physiology MH - Male MH - Outcome Assessment, Health Care MH - Proprioception/*physiology MH - Reaction Time MH - Surveys and Questionnaires MH - Touch Perception/*physiology MH - Transcutaneous Electric Nerve Stimulation/*methods MH - Visual Perception/*physiology MH - Young Adult OTO - NOTNLM OT - Proprioceptive drift OT - Rubber hand illusion OT - Sense of body ownership OT - Transcutaneous electrical nerve stimulation OT - Visuotactile synchrony EDAT- 2018/10/12 06:00 MHDA- 2019/05/11 06:00 CRDT- 2018/10/12 06:00 PHST- 2018/05/23 00:00 [received] PHST- 2018/10/05 00:00 [accepted] PHST- 2018/10/12 06:00 [pubmed] PHST- 2019/05/11 06:00 [medline] PHST- 2018/10/12 06:00 [entrez] AID - 10.1007/s00221-018-5398-9 [pii] AID - 10.1007/s00221-018-5398-9 [doi] PST - ppublish SO - Exp Brain Res. 2019 Jan;237(1):81-89. doi: 10.1007/s00221-018-5398-9. Epub 2018 Oct 10.