Pupillometry: the Index of Cognitive Activity in a dual-task study

Pupillometry: the Index of Cognitive Activity in a dual-task study Vera Demberg (vera@coli.uni-saarland.de) Cluster of Excellence, Saarland University, Campus C7.4, 66123 Saarbr¨ucken, Germany Abstract This paper reports experimental results on the index of cogni- tive activity (ICA), a recent micro-level measure in pupillom- etry, which relates processing load to the frequency of rapid small dilations of the pupil. We collected pupil size...