Title :
Pattern identification as a function of stimulation on a fingertip-scanned electrotactile display
Author :
Kaczmarek, Kurt A. ; Haase, Steven J.
Author_Institution :
Dept. of Orthopedics & Rehabilitation Medicine, Wisconsin Univ., Madison, WI, USA
Abstract :
Two studies were conducted to determine the effect of stimulation current on pattern perception on a 49-point fingertip-scanned electrotactile (electrocutaneous) display. Performance increased monotonically from near chance levels at the lowest subthreshold current levels tested to approximately 90% at the highest comfortable current levels. This suggests the existence of a tradeoff between spatial performance and usable "gray scale" range in electrotactile presentation of graphical information.
Keywords :
bioelectric potentials; handicapped aids; touch (physiological); touch sensitive screens; vision defects; electrocutaneous display; fingertip-scanned electrotactile; graphical information; gray scale range; pattern identification; spatial performance; stimulation current effect; Computer displays; Computer graphics; Computer vision; Electrodes; Pins; Plastics; Skin; Speech synthesis; Subthreshold current; Testing; Adult; Electric Stimulation; Electrodes; Female; Fingers; Humans; Male; Pattern Recognition, Automated; Reproducibility of Results; Sensation; Sensitivity and Specificity; Sensory Aids; Sensory Thresholds; Skin; Skin Physiology; Task Performance and Analysis; Transducers;
Journal_Title :
Neural Systems and Rehabilitation Engineering, IEEE Transactions on
DOI :
10.1109/TNSRE.2003.816874
