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Brain Activity during Observation of Another Person`s Hand Action with a Tangible User Interface
( Shigekazu Higuchi ),( Kana Sueyohi ),( Kazuo Isoda ),( Ichiro Hisanaga ),( Stephanie Orlic ),( Yeon Kyu Kim ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
A tangible user interface is characterized by physical representation using graspable objects. The alpha frequency band rhythm that appears in central area (mu wave) is suppressed by observation of an action. Mu wave suppression has been used as an index of human mirror system, which reflects action recognition and empathy to others behavior. In the present study, we examined the effects of a tangible user interface on an observer`s brain activity. The participants were fifteen right-handed males. Three types of user interface for learning art objects (tangible interface, touch panel interface, and keyboard interface) were used. A manipulator grasps a model porcelain object as an input device and moves it to the plate with a sensor in front of the screen. A 64-channel electroencephalogram (EEG) was measured while the participants were observing a person manipulating the user interface. Significant mu wave suppression was found in the tangible interface condition and it was localized in the left central area. These results suggest that the tangible user interface with object-directed and goal-oriented hand actions can enhance activity of the mirror neuron system in the sensorimotor area in observers.