Material discrimination and thermal perception
Lynette A. Jones,M. Berris +1 more
- pp 171-178
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TLDR
It appears that subjects respond more to variations in heat capacity than thermal conductivity when discriminating between materials, but only when the thermal differences are large.Abstract:
This research is focused on the development of a thermal display and understanding the nature of the thermal cues used to identify objects haptically. The objective of the present set of experiments was to measure material discrimination when thermal cues are the main source of information about the materials. A two-alternative forced-choice task was used to assess discrimination. Of the five materials presented to the hand, nylon was the only material reliably discriminated as being warmer than the other materials. A second experiment was conducted to determine the magnitude of the skin temperature changes when contact was made with the materials. The results indicated that thermal responses were small, averaging 0.5/spl deg/C. These findings suggest that temperature cues can be used to discriminate between materials, but only when the thermal differences are large. It appears that subjects respond more to variations in heat capacity than thermal conductivity when discriminating between materials.read more
Citations
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Journal ArticleDOI
Warm or Cool, Large or Small? The Challenge of Thermal Displays
Lynette A. Jones,Hsin-Ni Ho +1 more
TL;DR: This review considers the models developed to simulate the thermal interaction between an object and the hand as they make contact and considers the advantages and challenges associated with using thermal displays in these diverse areas.
Journal ArticleDOI
Contribution of thermal cues to material discrimination and localization
Hsin-Ni Ho,Lynette A. Jones +1 more
TL;DR: The results indicated that the subjects were able to discriminate between materials, using thermal cues, when the differences in their thermal properties were large, but the changes in skin temperature when the fingers were touching the materials were smaller than those predicted by the theoretical model.
Journal ArticleDOI
Sensory substitution using tactile pin arrays: human factors, technology and applications
Steven Wall,Stephen Brewster +1 more
TL;DR: Results are presented from experiments on tactual perception related to understanding graphs and simple visulisations with a commercially available tactile array device, which found that subjects could discriminate positive or negative line gradient to within ± 4.7° of the horizontal.
Proceedings ArticleDOI
Signal processing and fabrication of a biomimetic tactile sensor array with thermal, force and microvibration modalities
TL;DR: A microprocessor-based signal conditioning and digitizing system for these sensing modalities and its embodiment on a flex-circuit that facilitates efficient assembly of the entire system via injection molding is described.
References
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Book
The Psychology of Touch
Morton A. Heller,William Schiff +1 more
TL;DR: Heller et al. as mentioned in this paper described the development and intermodal relations between visual and tactile perception in blind people, including tactile pattern perception, tactile perception of form, and tactile sense of form.
Proceedings ArticleDOI
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Contribution of thermal cues to material discrimination and localization
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