Correlates of cognitive and emotional processes in nonconscious perception and motor responses

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The present study examined the effects of cognitive and emotional stimuli on perceptual-motor responses (reaction times; RT). We initially examinedemotional stimuli of the International Affecting Picture System (IAPS, Lang et al., 1999), resulting in no significant validity of IASP pictures in evoking emotional responses in our experimental procedures. We then used monster face pictures as emotional stimuli in Go/NoGo RT tasks. This showed significant emotional (sympathetic neural) responses and delayed perceptual-motor RT responses, although with no significant relationships between them. We in turn used much stronger stimuli that were electrically conditioned, resulting in somehow delayed perceptual-motor RTs. This suggested that strong emotional stimuli may give rise to delays of perceptual-motor responses with significant sympathetic neural facilitations.