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Updated: Jun 12, 2025

Using Facial Electromyography to Assess Facial Muscle Reactions to Experienced and Observed Affective Touch in Humans
Published on: March 15, 2019
Pre-touch reaction is preferred over post-touch reaction in interaction with displayed agent
1Interaction Science Laboratories, Advanced Telecommunications Research Institute International, Seika-cho, Kyoto, Japan.
This study explored pre-touch reactions for on-screen agents, finding users prefer agent responses before physical contact. This enhances natural human-agent interaction for displayed interfaces.
Area of Science:
- Human-Computer Interaction
- Computer Graphics
Background:
- Pre-touch reactions are crucial for natural human-agent interaction.
- Existing research primarily focuses on virtual reality agents and physical robots, neglecting displayed agents.
- Displayed agents, or on-screen computer graphics, represent an underexplored area for pre-touch reaction design.
Purpose of the Study:
- To investigate the design of pre-touch reactions for displayed agents.
- To utilize the display's physical boundary as a criterion for agent pre-touch reactions.
- To evaluate the effectiveness of pre-touch reactions for displayed agents through user experiments.
Main Methods:
- Developed a system to detect touch events and pre-touch behaviors around a display.
- Implemented a displayed agent system capable of reacting to user interactions.
- Conducted experiments with human participants to assess perceived feelings related to agent reactions.
Main Results:
- User participants significantly preferred pre-touch reactions over post-touch reactions.
- The developed system successfully detected pre-touch behaviors and touch events.
- The study provides empirical evidence for the importance of pre-touch reactions in displayed agent interactions.
Conclusions:
- Pre-touch reactions are vital for enhancing the naturalness of human-agent interaction with displayed agents.
- The physical boundary of a display can serve as a design criterion for agent pre-touch reactions.
- Future research should explore further applications and optimizations of pre-touch reactions for on-screen agents.
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