@article {2149, title = {Revealing Real-Time Emotional Responses: a Personalized Assessment based on Heartbeat Dynamics}, journal = {Nature Scientific Reports}, volume = {4}, year = {2014}, pages = {1{\textendash}13}, keywords = {Bioengineering}, author = {G. Valenza and L. Citi and A Lanata and E. P. Scilingo and R. Barbieri} }