Electrostatic modulated friction as tactile feedback: Intensity perception

Dinesh Wijekoon, Marta E. Cecchinato, Eve Hoggan, Jukka Linjama

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

28 Citations (Scopus)


We describe the preliminary results from an experiment investigating the perceived intensity of modulated friction created by electrostatic force, or electrovibration. A prototype experimental system was created to evaluate user perception of sinusoidal electrovibration stimuli on a flat surface emulating a touch screen interface. We introduce a fixed 6-point Effect Strength Subjective Index (ESSI) as a measure of generic sensation intensity, and compare it with an open magnitude scale. The results of the experiment indicate that there are significant correlations between intensity perception and signal amplitude, and the highest sensitivity was found at a frequency of 80 Hz. The subjective results show that the users perceived the electrovibration stimuli as pleasant and a useful means of feedback for touchscreens.
Original languageEnglish
Title of host publicationHaptics: Perception, Devices, Mobility, and Communication
Subtitle of host publicationInternational Conference, EuroHaptics 2012, Tampere, Finland, June 13-15, 2012, Proceedings
EditorsPoika Isokoski, Jukka Springare
Number of pages12
ISBN (Print)978-3-319-42320-3
Publication statusPublished - Jun 2012
EventEuroHaptics 2012: 8th International Conference on Human Haptic Sensing and Touch Enabled Computer Applications - Tampere, Finland
Duration: 13 Jun 201215 Jun 2012

Publication series

NameLecture Notes in Computer Science
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


ConferenceEuroHaptics 2012
Internet address

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