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An electrophysiological study of emotional perception in a dual-task paradigm

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dc.contributor.advisor Lien, Mei-Ching
dc.creator Shaw, Kathleen Elizabeth
dc.date.accessioned 2011-06-07T15:20:32Z
dc.date.available 2011-06-07T15:20:32Z
dc.date.copyright 2011-02-24
dc.date.issued 2011-06-07
dc.identifier.uri http://hdl.handle.net/1957/21641
dc.description Graduation date: 2011 en_US
dc.description.abstract The present study examined whether emotion perception requires central attentional resources. A dual-task paradigm was used to examine whether people can direct their attention to a face expressing a target emotion, even while they are still selecting a response to another task. Task-1 required an auditory discrimination while for Task-2, one happy face and one angry face were presented adjacent to each other. Participants were asked to find the face with a pre-specified emotion and indicate its gender (Experiment 1), location (Experiment 2), or identify whether the faces were the same gender or different gender without emotional goal settings (Experiment 3). The stimulus onset asynchrony (SOA) between the two tasks was varied. To determine where people were attending, an electrophysiological measure of attention known as the N2pc component of the event-related brain potential was used. The face expressing the target emotion elicited an N2pc effect, indicating attention capture, even when participants were already pre-occupied with processing Task-1 (i.e., short SOAs). Thus, it appears that emotion perception can occur even when central attentional resources are unavailable. In addition, angry faces elicited a much larger N2pc effect than happy faces, indicating an attentional bias toward negative emotions. en_US
dc.language.iso en_US en_US
dc.subject Spatial attention en_US
dc.subject emotion perception en_US
dc.subject dual-task paradigm en_US
dc.subject event-related potentials en_US
dc.subject.lcsh Emotions and cognition en_US
dc.subject.lcsh Human multitasking en_US
dc.subject.lcsh Face perception -- Testing en_US
dc.title An electrophysiological study of emotional perception in a dual-task paradigm en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Master of Arts in Interdisciplinary Studies (M.A.I.S.) en_US
dc.degree.level Master's en_US
dc.degree.discipline Graduate School en_US
dc.degree.grantor Oregon State University en_US
dc.contributor.committeemember Bernieri, Frank
dc.contributor.committeemember McClelland, Megan
dc.contributor.committeemember Husband, William

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