RT Journal Article
T1 Electrotactile Communication via Matrix Electrode Placed on the Torso Using Fast Calibration, and Static vs. Dynamic Encoding
A1 Malešević, Jovana
A1 Kostić, Miloš
A1 Jure, Fabricio A.
A1 Spaich, Erika G.
A1 Došen, Strahinja
A1 Ilić, Vojin
A1 Bijelić, Goran
A1 Štrbac, Matija
AB Electrotactile stimulation is a technology that reproducibly elicits tactile sensations and can be used as an alternative channel to communicate information to the user. The presented work is a part of an effort to develop this technology into an unobtrusive communication tool for first responders. In this study, the aim was to compare the success rate (SR) between discriminating stimulation at six spatial locations (static encoding) and recognizing six spatio-temporal patterns where pads are activated sequentially in a predetermined order (dynamic encoding). Additionally, a procedure for a fast amplitude calibration, that includes a semi-automated initialization and an optional manual adjustment, was employed and evaluated. Twenty subjects, including twelve first responders, participated in the study. The electrode comprising the 3 × 2 matrix of pads was placed on the lateral torso. The results showed that high SRs could be achieved for both types of message encoding after a short learning phase; however, the dynamic approach led to a statistically significant improvement in messages recognition (SR of 93.3%), compared to static stimulation (SR of 83.3%). The proposed calibration procedure was also effective since in 83.8% of the cases the subjects did not need to adjust the stimulation amplitude manually.
SN 1424-8220
YR 2022
FD 2022-10
LK https://hdl.handle.net/11556/3273
UL https://hdl.handle.net/11556/3273
LA eng
NO Malešević , J , Kostić , M , Jure , F A , Spaich , E G , Došen , S , Ilić , V , Bijelić , G & Štrbac , M 2022 , ' Electrotactile Communication via Matrix Electrode Placed on the Torso Using Fast Calibration, and Static vs. Dynamic Encoding ' , Sensors , vol. 22 , no. 19 , 7658 . https://doi.org/10.3390/s22197658
NO Publisher Copyright: © 2022 by the authors.
NO This research was funded by the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 883315.
DS TECNALIA Publications
RD 28 jul 2024