Surface waves and spatial localization in vibrotactile displays
The locus of vibrotactile stimulation is often used as an encoding cue in tactile displays developed for spatial orientation and navigation. However, the ability to localize the site of stimulation varies as a function of the number and configuration of the vibrating motors (tactors) in the display....
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| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers (IEEE)
2013
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| Online Access: | http://hdl.handle.net/1721.1/78658 https://orcid.org/0000-0002-8251-5432 https://orcid.org/0000-0003-1361-8654 |
| _version_ | 1826203789102678016 |
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| author | Jones, Lynette A. Held, David Hunter, Ian |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Jones, Lynette A. Held, David Hunter, Ian |
| author_sort | Jones, Lynette A. |
| collection | MIT |
| description | The locus of vibrotactile stimulation is often used as an encoding cue in tactile displays developed for spatial orientation and navigation. However, the ability to localize the site of stimulation varies as a function of the number and configuration of the vibrating motors (tactors) in the display. As the inter-tactor distance decreases it has been found that the ability to localize a point of stimulation diminishes. One factor that may limit tactile localization is the surface wave elicited by vibration that propagates across the skin at a velocity that depends on the frequency of vibration and the viscoelastic properties of the skin. A material that simulates the stress-strain characteristics of human skin was used to measure the characteristics of surface waves during vibrotactile stimulation. Accelerometers glued to the simulated skin at fixed distances from the activated tactors were used to measure the amplitude of the acceleration as a function of distance as well as the propagation velocity. It was determined that at a distance of 60 mm from the site of activation, the surface wave was on average attenuated to less than 1 m/s[superscript 2]. This suggests that for this type of tactor an inter-tactor distance of at least 60 mm would be optimal for a display in which the locus of stimulation is used as an encoding variable. It seems that much of the difficulty encountered in identifying the locus of a vibrotactile stimulus in multi-tactor displays may result from small intertactor distances. |
| first_indexed | 2024-09-23T12:43:03Z |
| format | Article |
| id | mit-1721.1/78658 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:43:03Z |
| publishDate | 2013 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/786582022-10-01T10:41:57Z Surface waves and spatial localization in vibrotactile displays Jones, Lynette A. Held, David Hunter, Ian Massachusetts Institute of Technology. Department of Mechanical Engineering Jones, Lynette A. Held, David Hunter, Ian The locus of vibrotactile stimulation is often used as an encoding cue in tactile displays developed for spatial orientation and navigation. However, the ability to localize the site of stimulation varies as a function of the number and configuration of the vibrating motors (tactors) in the display. As the inter-tactor distance decreases it has been found that the ability to localize a point of stimulation diminishes. One factor that may limit tactile localization is the surface wave elicited by vibration that propagates across the skin at a velocity that depends on the frequency of vibration and the viscoelastic properties of the skin. A material that simulates the stress-strain characteristics of human skin was used to measure the characteristics of surface waves during vibrotactile stimulation. Accelerometers glued to the simulated skin at fixed distances from the activated tactors were used to measure the amplitude of the acceleration as a function of distance as well as the propagation velocity. It was determined that at a distance of 60 mm from the site of activation, the surface wave was on average attenuated to less than 1 m/s[superscript 2]. This suggests that for this type of tactor an inter-tactor distance of at least 60 mm would be optimal for a display in which the locus of stimulation is used as an encoding variable. It seems that much of the difficulty encountered in identifying the locus of a vibrotactile stimulus in multi-tactor displays may result from small intertactor distances. Decision Architectures Collaborative Technology Alliance (United States. Army Research Office Cooperative Agreement DAAD19-01-2-0009) 2013-05-01T18:02:08Z 2013-05-01T18:02:08Z 2010-03 Article http://purl.org/eprint/type/ConferencePaper 978-1-4244-6820-1 978-1-4244-6821-8 http://hdl.handle.net/1721.1/78658 Jones, Lynette A., David Held, and Ian Hunter. Surface Waves and Spatial Localization in Vibrotactile Displays. In Pp. 91–94. 2010, IEEE. © Copyright 2010 IEEE https://orcid.org/0000-0002-8251-5432 https://orcid.org/0000-0003-1361-8654 en_US http://dx.doi.org/10.1109/HAPTIC.2010.5444673 IEEE Haptics Symposium, 2010 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers (IEEE) IEEE |
| spellingShingle | Jones, Lynette A. Held, David Hunter, Ian Surface waves and spatial localization in vibrotactile displays |
| title | Surface waves and spatial localization in vibrotactile displays |
| title_full | Surface waves and spatial localization in vibrotactile displays |
| title_fullStr | Surface waves and spatial localization in vibrotactile displays |
| title_full_unstemmed | Surface waves and spatial localization in vibrotactile displays |
| title_short | Surface waves and spatial localization in vibrotactile displays |
| title_sort | surface waves and spatial localization in vibrotactile displays |
| url | http://hdl.handle.net/1721.1/78658 https://orcid.org/0000-0002-8251-5432 https://orcid.org/0000-0003-1361-8654 |
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