Review
Two Dimensional Finite Element Modeling to Identify Physiological Bases for Tactile Gap Discrimination
Proceedings of the Human Factors and Ergonomics Society Annual Meeting, Vol.49(10), pp.891-895
09/2005
DOI: 10.1177/154193120504901004
Abstract
Tactile edge and gap detection are fundamental to performing manual tasks. Because slowly adapting type I (SA-I) mechanoreceptors encode details pertinent to edge localization, understanding low-level encoding is critical to understanding edge perception. Solid mechanics models may help us understand how mechanoreceptors in the skin encode applied surface indentation into neural signals representing edges. Finite element models test whether an indenter separated by a gap creates unique stress/strain distributions in models based upon orientation to fingerprint lines. Results indicate that a gap axis parallel to ridge lines elicits a more pronounced signal than a gap axis perpendicular to ridge lines. The differences may be due to underlying intermediate ridge microstructure. The percentage differences for three derived stress metrics range from 30-87% greater when the indenter's gap axis parallels the ridges. This initial effort demonstrates that underlying skin microstructure may aid tactile perception of stimulus orientation.
Details
- Title: Subtitle
- Two Dimensional Finite Element Modeling to Identify Physiological Bases for Tactile Gap Discrimination
- Creators
- Gregory J Gerling - University of IowaGeb W Thomas - University of Iowa
- Resource Type
- Review
- Publication Details
- Proceedings of the Human Factors and Ergonomics Society Annual Meeting, Vol.49(10), pp.891-895
- DOI
- 10.1177/154193120504901004
- ISSN
- 1541-9312
- eISSN
- 2169-5067
- Publisher
- SAGE Publications; Los Angeles, CA
- Language
- English
- Date published
- 09/2005
- Academic Unit
- Orthopedics and Rehabilitation; Industrial and Systems Engineering
- Record Identifier
- 9984186582502771
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