Effects of Mechanical Parameters on Hardness Experienced by Damped Natural Vibration Stimulation. - Kosuke Higashi; Shogo Okamoto; Hikaru Nagano; Yoji Yamada (SMC, 2015)

Perceived Hardness by Tapping: The Role of a Secondary Mode of Vibration. - Kosuke Higashi; Shogo Okamoto; Hikaru Nagano; Masashi Konyo; Yoji Yamada (AsiaHaptics, 2016)

What is the Hardness Perceived by Tapping? - Kosuke Higashi; Shogo Okamoto; Yoji Yamada (EuroHaptics (1), 2016)

Vibration-based rendering of virtual hardness: Frequency characteristics of perception. - Kosuke Higashi; Shogo Okamoto; Hikaru Nagano; Masashi Konyo; Yoji Yamada (GCCE, 2017)

Hardness perception by tapping: Effect of dynamic stiffness of objects. - Kosuke Higashi; Shogo Okamoto; Yoji Yamada; Hikaru Nagano; Masashi Konyo (WHC, 2017)

Hardness Perception Through Tapping: Peak and Impulse of the Reaction Force Reflect the Subjective Hardness. - Kosuke Higashi; Shogo Okamoto; Yoji Yamada; Hikaru Nagano; Masashi Konyo (EuroHaptics (1), 2018)

Perceived Hardness through Actual and Virtual Damped Natural Vibrations. - Kosuke Higashi; Shogo Okamoto; Yoji Yamada (IEEE Trans. Haptics, 2018)