Ildar Rakhmatulin, PhD Heriot-Watt University, Edinburgh, Scottland: https://scholar.google.com/citations?user=L8q-KSoAAAAJ&hl=de&oi=sra Sebastian Völkl, Hacker BCI: https://www.researchgate.net/profile/Sebastian_Voelkl2 on Google Scholar: https://scholar.google.com/scholar?hl=de&as_sdt=0%2C5&q=pieeg&btn