Sensory substitution using tactile pin arrays: human factors, technology and applications
Signal Processing - Special section: Multimodal human-computer interfaces
Development and evaluation of a thermal display for material identification and discrimination
ACM Transactions on Applied Perception (TAP)
Presence: Teleoperators and Virtual Environments
Thermoelectric tactile display based on the thermal grill illusion
Proceedings of the 14th European conference on Cognitive ergonomics: invent! explore!
Thermal display for telepresence based on neural identification and heat flux control
Presence: Teleoperators and Virtual Environments
ROBIO'09 Proceedings of the 2009 international conference on Robotics and biomimetics
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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 dis rimination when thermal ues are the main source ofinformation 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 潞 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.