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Effect of Remote Masking on Detection of Electrovibration

2019

Conference Paper

hi


Masking has been used to study human perception of tactile stimuli, including those created on haptic touch screens. Earlier studies have investigated the effect of in-site masking on tactile perception of electrovibration. In this study, we investigated whether it is possible to change detection threshold of electrovibration at fingertip of index finger via remote masking, i.e. by applying a (mechanical) vibrotactile stimulus on the proximal phalanx of the same finger. The masking stimuli were generated by a voice coil (Haptuator). For eight participants, we first measured the detection thresholds for electrovibration at the fingertip and for vibrotactile stimuli at the proximal phalanx. Then, the vibrations on the skin were measured at four different locations on the index finger of subjects to investigate how the mechanical masking stimulus propagated as the masking level was varied. Finally, electrovibration thresholds measured in the presence of vibrotactile masking stimuli. Our results show that vibrotactile masking stimuli generated sub-threshold vibrations around fingertip, and hence did not mechanically interfere with the electrovibration stimulus. However, there was a clear psychophysical masking effect due to central neural processes. Electrovibration absolute threshold increased approximately 0.19 dB for each dB increase in the masking level.

Author(s): Milad Jamalzadeh and Burak Güçlü and Yasemin Vardar and Cagatay Basdogan
Book Title: Proceedings of the IEEE World Haptics Conference (WHC)
Pages: 229--234
Year: 2019
Month: July

Department(s): Haptic Intelligence
Bibtex Type: Conference Paper (inproceedings)
Paper Type: Conference

DOI: 10.1109/WHC.2019.8816175

Address: Tokyo, Japan

Links:

BibTex

@inproceedings{Jamalzadeh19-WHC-Masking,
  title = {Effect of Remote Masking on Detection of Electrovibration},
  author = {Jamalzadeh, Milad and G{\"u}{\c{c}}l{\"u}, Burak and Vardar, Yasemin and Basdogan, Cagatay},
  booktitle = {Proceedings of the IEEE World Haptics Conference (WHC)},
  pages = {229--234},
  address = {Tokyo, Japan},
  month = jul,
  year = {2019},
  month_numeric = {7}
}