“…Emotional arousal or intensity is thought to reflect the motivational value of an emotion (Lang et al, 1998), and has a strong effect on cognition, enhancing attention (Davis and Whalen, 2001;Fox et al, 2001) and also memory, via the increased activation of the amygdala and hippocampus (Cahill et al, 1996;Dolcos et al, 2004;Kensinger and Schacter, 2006;Richardson et al, 2004). There is some evidence that automatic arousal processing is relatively stable in old age, with older adults showing the same ability as young adults to detect high arousing stimuli (Leclerc and Kensinger, 2008), and threatening stimuli such as highly arousing negative scenes from the international affective picture system (IAPS) (Rösler et al, 2005), or threatening faces (Mather and Knight, 2006). There have been conflicting reports of older adults' autonomic response to emotional arousal however.…”