Mark P. McAvoy
Washington University in St. Louis
37 Papers
272 Citations
Mark P. McAvoy is an academic researcher from Washington University in St. Louis. The author has contributed to research in topics: Visual cortex & Intraparietal sulcus. The author has an hindex of 25, co-authored 35 publications. Previous affiliations of Mark P. McAvoy include Howard Hughes Medical Institute & Southern Illinois University Carbondale.
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Papers
Functional deactivations: change with age and dementia of the Alzheimer type.
Cindy Lustig,Abraham Z. Snyder,Mehul N. Bhakta,Katherine C. O'Brien,Mark P. McAvoy,Marcus E. Raichle,John C. Morris,Randy L. Buckner +7 more
TL;DR: The results introduce important opportunities to explore the functional properties of regions showing deactivations, how their dynamic functional properties relate to their baseline metabolic rates, and how they change with age and dementia.
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Differential Vulnerability of Anterior White Matter in Nondemented Aging with Minimal Acceleration in Dementia of the Alzheimer Type: Evidence from Diffusion Tensor Imaging
Denise Head,Randy L. Buckner,Joshua S. Shimony,Laura E. Williams,Erbil Akbudak,Thomas E. Conturo,Mark P. McAvoy,John C. Morris,Abraham Z. Snyder +8 more
TL;DR: The results indicate that nondemented aging is characterized by significant changes in white matter most prominently in anterior brain regions, and the dissociation between the regional effects of age and dementia status suggests that the mechanisms underlying age-associated cognitive decline are likely distinct from those underlying DAT.
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Right Hemisphere Dominance during Spatial Selective Attention and Target Detection Occurs Outside the Dorsal Frontoparietal Network
Gordon L. Shulman,Daniel L. W. Pope,Serguei V. Astafiev,Mark P. McAvoy,Abraham Z. Snyder,Maurizio Corbetta +5 more
TL;DR: Stimulus-driven shifts of spatial attention in both visual fields evoked right-hemisphere dominant activity in temporoparietal junction and target detection at the attended location produced a more widespread right hemisphere dominance in frontal, parietal, and temporal cortex.
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Interaction of Stimulus-Driven Reorienting and Expectation in Ventral and Dorsal Frontoparietal and Basal Ganglia-Cortical Networks
Gordon L. Shulman,Serguei V. Astafiev,Danny Franke,Daniel L. W. Pope,Abraham Z. Snyder,Mark P. McAvoy,Maurizio Corbetta +6 more
TL;DR: Right temporoparietal junction (TPJ) was activated more by cues for shifting than maintaining attention independently of cue location and probability, acting as a switch, while basal ganglia and frontal/insula regions also were activated only when reorienting was unexpected but showed strong rs-fcMRI among themselves, not with TPJ/IFG, defining a distinct network that may retrieve/activate commands for shifting attention.
386
Right TPJ Deactivation during Visual Search: Functional Significance and Support for a Filter Hypothesis
TL;DR: It is proposed that the deactivation in right supramarginal gyrus reflects the filtering of irrelevant inputs from TPJ, preventing unimportant objects from being attended, and predicts that the mean deactivation to distracters should be larger when the subsequent target is detected than missed, reflecting more efficient filtering.
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