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Exogenous vs. endogenous attention: Shifting the balance of fronto-parietal activity
Meyer, Kristin N.1; Du, Feng2; Parks, Emily3; Hopfinger, Joseph B.1; J.B. Hopfinger
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Despite behavioral and electrophysiological evidence for dissociations between endogenous (voluntary) and exogenous (reflexive) attention, fMRI results have yet to consistently and clearly differentiate neural activation patterns between these two types of attention. This study specifically aimed to determine whether activity in the dorsal fronto-parietal network differed between endogenous and exogenous conditions. Participants performed a visual discrimination task in endogenous and exogenous attention conditions while undergoing fMRI scanning. Analyses revealed robust and bilateral activation throughout the dorsal fronto-parietal network for each condition, in line with many previous results. In order to investigate possible differences in the balance of neural activity within this network with greater sensitivity, a priori regions of interest (ROIs) were selected for analysis, centered on the frontal eye fields (FEF) and intraparietal sulcus (IPS) regions identified in previous studies. The results revealed a significant interaction between region, condition, and hemisphere. Specifically, in the left hemisphere, frontal areas were more active than parietal areas, but only during endogenous attention. Activity in the right hemisphere, in contrast, remained relatively consistent for these regions across conditions. Analysis of this activity over time indicates that this left-hemispheric regional imbalance is present within the FEF early, at 3-6.5 s post-stimulus presentation, whereas a regional imbalance in the exogenous condition is not evident until 6.5-8 s post-stimulus presentation. Overall, our results provide new evidence that although the dorsal frontoparietal network is indeed associated with both types of attentional orienting, regions of the network are differentially engaged over time and across hemispheres depending on the type of attention.

KeywordAttentional capture fMRI Involuntary attention Neuroimaging Visual Voluntary attention
Indexed BySCI ; SSCI
Funding OrganizationNational Institute of Mental Health(MH066034) ; National Science Foundation Graduate Research Fellowship Program(DGE-1650116)
WOS Research AreaBehavioral Sciences ; Neurosciences & Neurology ; Psychology
WOS SubjectBehavioral Sciences ; Neurosciences ; Psychology, Experimental
WOS IDWOS:000430644300035
WOS HeadingsScience & Technology ; Social Sciences ; Life Sciences & Biomedicine
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorJ.B. Hopfinger
Affiliation1.Univ North Carolina Chapel Hill, Dept Psychol & Neurosci, Davie Hall,CB 3270, Chapel Hill, NC 27599 USA
2.Chinese Acad Sci, Inst Psychol, CAS Key Lab Behav Sci, Beijing 100101, Peoples R China
3.Duke Univ, Thompson Writing Program, Trinity Coll Arts & Sci, Durham, NC USA
Recommended Citation
GB/T 7714
Meyer, Kristin N.,Du, Feng,Parks, Emily,et al. Exogenous vs. endogenous attention: Shifting the balance of fronto-parietal activity[J]. NEUROPSYCHOLOGIA,2018,111:307-316.
APA Meyer, Kristin N.,Du, Feng,Parks, Emily,Hopfinger, Joseph B.,&J.B. Hopfinger.(2018).Exogenous vs. endogenous attention: Shifting the balance of fronto-parietal activity.NEUROPSYCHOLOGIA,111,307-316.
MLA Meyer, Kristin N.,et al."Exogenous vs. endogenous attention: Shifting the balance of fronto-parietal activity".NEUROPSYCHOLOGIA 111(2018):307-316.
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