Discrimination of Spatial and Temporal Parameters in Electrocutaneous Stimulation
Bo Geng*, Senthoopiya Achuthan Paramanathan, Karina Faber Østergaard Pedersen, Mette Vandborg Lauridsen, Julie Gade, Eugen Romulus Lontis and Winnie Jensen
Department of Health Science and Technology, Aalborg University, Fredrik Bajers vej 7D, 9220 Aalborg E, Denmark
- Corresponding Author:
- Bo Geng
Department of Health Science and Technology
Aalborg University, Fredrik Bajers vej 7D, 9220 Aalborg E, Denmark
Tel: 45 9940 8798
Fax: 45 9815 4008
E-mail: [email protected]
Received April 05, 2016; Accepted May 02, 2016; Published May 06, 2016
Citation: Geng B, Paramanathan SA, Pedersen KFØ, Lauridsen MV, Gade J, et al. (2016) Discrimination of Spatial and Temporal Parameters in Electrocutaneous Stimulation. Int J Phys Med Rehabil 4:334. doi: 10.4172/2329-9096.1000334
Copyright: © 2016 Geng B, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This study aimed to investigate the human ability in discrimination of spatial and temporal parameters in electrocutaneous stimulation. Three surface electrodes were positioned on the ventral forearm of 14 able-bodied subjects. The subjects were instructed to discriminate between: (1) six different stimulation sites or site pairs, or (2) five different stimulation frequencies, or (3) hybrid parameters including both stimulation site and frequency, in three respective experiments. The results showed that two-site discrimination had a significantly lower success rate than one-site discrimination with a mean difference up to 12.1% (p<0.01). Temporal (frequency) discrimination appeared more challenging compared to spatial (site) discrimination. Moreover, the female subjects’ performance was noticeably better than the males in all the three discrimination tasks with the mean difference up to 11.9% (p<0.01), 15.4% (p<0.01), and 16.7% (p<0.001), respectively. The findings may provide an insight into building an effective sensory feedback strategy in relation to development of functional hand prostheses and treatment of phantom limb pain.