Physiological computing systems international conferences, PhyCS 2016, Lisbon, Portugal, July 27–28, 2016, PhyCS 2017, Madrid, Spain, July 27–28, 2017, PhyCS 2018, Seville, Spain, September 19–21, 2018 : revised and extended selected papers - Holzinger, Andreas 1963-; Pope, Alan; Silva, Hugo Humberto Plácido da (Lecture notes in computer science, 2019)