caa a22 4500 469122455 CHVBK 20180323133142.0 cr unu---uuuuu 170328e19921101xx s 000 0 eng 10.1007/BF02368611 doi (NATIONALLICENCE)springer-10.1007/BF02368611 Optimization of single electrode tactile codes [Elektronische Daten] [Andrew Szeto, Glenn Farrenkopf] The effects of a frequency modulated electrocutaneous signal's (code's) characteristics on the interpretability of the signal were investigated using an electrocutaneous tracking approach. The characteristics investigated include the functional relationship (exponential and hybrid) between an informational signal and the stimulation frequency, the range of stimulation (2-50 Hz and 2-100 Hz), and the impact of pulse width compensation on a code's efficacy. The interpretability of six different single bipolar electrode codes was examined by 30 subjects using a balanced incomplete block experimental design. Codes with exponentially shaped transfer functions resulted in generally lower electrocutaneous tracking errors than codes utilizing hybridshaped transfer functions. Hybrid codes had a transfer function that was linear in the lower frequency range and exponential in the higher frequency range. Codes with a 2-100 Hz frequency range were interpreted better than codes with a 2-50 Hz frequency range. The use of pulse width compensation to maintain a more even level of stimulation intensity had a slightly negative effect on the subjects' abilities to cutaneously track the information signal. Pergamon Press Ltd., 1992 Electrocutaneous stimulation nationallicence Tactile codes nationallicence Sensory feedback nationallicence Szeto Andrew Department of Electrical and Computer Engineering, San Diego State University, 92182-0190, San Diego, CA aut Farrenkopf Glenn Department of Electrical and Computer Engineering, San Diego State University, 92182-0190, San Diego, CA aut Annals of Biomedical Engineering Kluwer Academic Publishers 20/6(1992-11-01), 647-665 0090-6964 20:6<647 1992 20 10439 https://doi.org/10.1007/BF02368611 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02368611 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Szeto Andrew Department of Electrical and Computer Engineering, San Diego State University, 92182-0190, San Diego, CA aut NATIONALLICENCE 700 1- Farrenkopf Glenn Department of Electrical and Computer Engineering, San Diego State University, 92182-0190, San Diego, CA aut NATIONALLICENCE 773 0- Annals of Biomedical Engineering Kluwer Academic Publishers 20/6(1992-11-01), 647-665 0090-6964 20:6<647 1992 20 10439 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer