1 Skin conductance Responses to at- Threshold Angry and Neutral Facial Stimuli; Evidence for a Mask to Masked Stimulus Mismatch Bias during Detection Performance. Tsikandilakis Myron 1 , 2 , 3 Robert Davis 2 Kiparissiadis Antonios 1 , 1 Department of Psychology, University of Nottingham 2 Department of Psychology, Goldsmiths, University of London 3 King’s College, Institute for Psychiatry Address for correspondence: Dr Tsikandilakis Myron Department of Psychology, University of Nottingham, lpxmt1@nottingham.ac.uk, myron.tsikandilakis@kcl.ac.uk , ps202mt@gold.ac.uk . Key words: physiological arousal, emotional priming, subliminal Word Count: 6392