AUTHOR=Kelava Augustin , Muma Michael , Deja Marlene , Dagdagan Jack Y. , Zoubir Abdelhak M. TITLE=A new approach for the quantification of synchrony of multivariate non-stationary psychophysiological variables during emotion eliciting stimuli JOURNAL=Frontiers in Psychology VOLUME=5 YEAR=2015 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2014.01507 DOI=10.3389/fpsyg.2014.01507 ISSN=1664-1078 ABSTRACT=

Emotion eliciting situations are accompanied by changes of multiple variables associated with subjective, physiological and behavioral responses. The quantification of the overall simultaneous synchrony of psychophysiological reactions plays a major role in emotion theories and has received increased attention in recent years. From a psychometric perspective, the reactions represent multivariate non-stationary intra-individual time series. In this paper, a new time-frequency based latent variable approach for the quantification of the synchrony of the responses is presented. The approach is applied to empirical data, collected during an emotion eliciting situation. The results are compared with a complementary inter-individual approach of Hsieh et al. (2011). Finally, the proposed approach is discussed in the context of emotion theories, and possible future applications and limitations are provided.