<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Pupillary behavior in positive and negative emotions"^^ . "Emotion recognition process is proven to be an essential tool to increase human-computer reaction, interpret social relations, investigate mental health, and study human behavior. Pupil diameter (PD) has been addressed as the most reliable approach to identify emotions. This is because it is controlled by Automatic Nervous System (ANS) and is easy to detect. The goal of this paper is to identify the difference in PD due to individual's positive and negative emotional states. The paper introduces experimental results obtained using eye-tracking system with 30 participants. Initial results obtained by applying differently paired-sample t-test suggested a significant increase in pupil dilation during negative emotions compared to positive ones. It also shows steeper, higher, more sustained and longer dilation in high arousal negative stimuli. © 2013 IEEE."^^ . "2013" . . . "IEEE Computer Society"^^ . . "IEEE Computer Society"^^ . . . "IEEE ICSIPA 2013 - IEEE International Conference on Signal and Image Processing Applications"^^ . . . . . . . . . . . . . . "A."^^ . "Babiker"^^ . "A. Babiker"^^ . . "I."^^ . "Faye"^^ . "I. Faye"^^ . . "A."^^ . "Malik"^^ . "A. Malik"^^ . . . . . "HTML Summary of #3880 \n\nPupillary behavior in positive and negative emotions\n\n" . "text/html" . .