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→Neural Gain
There is a link between ACC activation and [[Larning and pupil size|pupil size]]<ref>[http://hub.hku.hk/handle/10722/179511 Critchley, HD, Tang, J, Glaser, D, Butterworth, B, Dolan, RJ (2005) Anterior cingulate activity during error and autonomic response]</ref>
==RPE==[[RPE]] can cause [[pupil dilation]] in the case of risk error prediction<ref>[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3183372/ Preuschoff, K., Marius’t Hart, B., & Einhäuser, W. (2011). Pupil dilation signals surprise: evidence for noradrenaline’s role in decision making. Frontiers in neuroscience, 5]</ref>. Also intimidating faces can cause pupil dilation<ref>Tomer from Haifa, 2015, in publication</ref><ref>[http://psych.wustl.edu/lengreen/publications/Dissociable%20but%20inter-related%20systems%20of%20cognitive%20control%20and%20reward%20during%20decision%20making%20(2007).pdf Satterthwaite, T. D., Green, L., Myerson, J., Parker, J., Ramaratnam, M., & Buckner, R. L. (2007). Dissociable but inter-related systems of cognitive control and reward during decision making: evidence from pupillometry and event-related fMRI. Neuroimage, 37(3), 1017–1031.]</ref>.
==References==