[1] Sichuan Normal Univ, Inst Brain & Psychol Sci, Chengdu, Peoples R China
[2] Univ Oulu, Ctr Machine Vis & Signal Anal CMVS, Oulu, Finland
[3] Univ Jyvaskyla, Fac Educ & Psychol, Dept Psychol, Jyvaskyla, Finland
[4] Tampere Univ, Fac Social Sci, Tampere, Finland