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Eye Fixation-Related Potentials during Visual Search on Acquaintance and Newly-Learned Faces

Authors
Lee, SeungjiLee, DoyoungGil, HyunjaeOakley, IanCho, Yang SeokKim, Sung-Phil
Issue Date
2월-2021
Publisher
MDPI
Keywords
visual search; familiarity; eye-fixation related potential; eye-tracking; face
Citation
BRAIN SCIENCES, v.11, no.2, pp.1 - 15
Indexed
SCIE
SCOPUS
Journal Title
BRAIN SCIENCES
Volume
11
Number
2
Start Page
1
End Page
15
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/50019
DOI
10.3390/brainsci11020218
ISSN
2076-3425
Abstract
Searching familiar faces in the crowd may involve stimulus-driven attention by emotional significance, together with goal-directed attention due to task-relevant needs. The present study investigated the effect of familiarity on attentional processes by exploring eye fixation-related potentials (EFRPs) and eye gazes when humans searched for, among other distracting faces, either an acquaintance's face or a newly-learned face. Task performance and gaze behavior were indistinguishable for identifying either faces. However, from the EFRP analysis, after a P300 component for successful search of target faces, we found greater deflections of right parietal late positive potentials in response to newly-learned faces than acquaintance's faces, indicating more involvement of goal-directed attention in processing newly-learned faces. In addition, we found greater occipital negativity elicited by acquaintance's faces, reflecting emotional responses to significant stimuli. These results may suggest that finding a familiar face in the crowd would involve lower goal-directed attention and elicit more emotional responses.
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