Wearable Photoplethysmographic Sensor System with PSoC Microcontroller. - Koji Sonoda; Yuji Kishida; Tomoya Tanaka; Kensuke Kanda; Takayuki Fujita; Kazusuke Maenaka; Kohei Higuchi (ICETET, 2012)

Circadian changes of influence of swallowing on heart rate variability with respiratory-phase domain analysis. - Takashi Numata; Yuji Kishida; Yasuhiko Jimbo; Kiyoshi Kotani (EMBC, 2013)