Search Results - "Mangun, G R"

The neural mechanisms of top-down attentional control by Mangun, G. R, Hopfinger, J. B, Buonocore, M. H

“…Selective visual attention involves dynamic interplay between attentional control systems and sensory brain structures. We used event-related functional…”
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Signal enhancement and suppression during visual–spatial selective attention by Couperus, J.W, Mangun, G.R

“…Abstract Selective attention involves the relative enhancement of relevant versus irrelevant stimuli. However, whether this relative enhancement involves…”
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Shifting visual attention in space: an electrophysiological analysis using high spatial resolution mapping by Hopf, J.-M, Mangun, G.R

“…Objectives: Evidence from cortical electrophysiology and functional imaging converges on the view that visual spatial selective attention results in a…”
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Neural mechanisms of top-down control during spatial and feature attention by Giesbrecht, B, Woldorff, M.G, Song, A.W, Mangun, G.R

“…Theories of visual selective attention posit that both spatial location and nonspatial stimulus features (e.g., color) are elementary dimensions on which…”
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fMRI evidence for both generalized and specialized components of attentional control by Slagter, H.A, Giesbrecht, B, Kok, A, Weissman, D.H, Kenemans, J.L, Woldorff, M.G, Mangun, G.R

“…Abstract A central question in the study of selective attention is whether top–down attentional control mechanisms are generalized or specialized for the type…”
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Combined spatial and temporal imaging of brain activity during visual selective attention in humans by Heinze, H. J, Mangun, G. R, Burchert, W, Hinrichs, H, Scholz, M, Münte, T. F, Gös, A, Scherg, M, Johannes, S, Hundeshagen, H, Gazzaniga, M. S, Hillyard, S. A

“…Visual-spatial attention is an essential brain function that enables us to select and preferentially process high priority information in the visual fields…”
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Neural mechanisms of visual selective attention by Mangun, G R

“…Visual selective attention improves our perception and performance by modifying sensory inputs at an early stage of processing. Spatial attention produces the…”
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Interactions between attention and perceptual grouping in human visual cortex by Khoe, W., Freeman, E., Woldorff, M.G., Mangun, G.R.

“…Freeman et al. (Freeman, E., Sagi, D., Driver, J., 2001. Lateral interactions between targets and flankers in low-level vision depend on attention to the…”
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Conflict monitoring in the human anterior cingulate cortex during selective attention to global and local object features by Weissman, D.H, Giesbrecht, B, Song, A.W, Mangun, G.R, Woldorff, M.G

“…Parallel processing affords the brain many advantages, but processing multiple bits of information simultaneously presents formidable challenges. For example,…”
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Brain regions activated by endogenous preparatory set shifting as revealed by fMRI by SLAGTER, H. A, WEISSMAN, D. H, GIESBRECHT, B, KENEMANS, J. L, MANGUN, G. R, KOK, A, WOLDORFF, M. G

“…An ongoing controversy concerns whether executive control mechanisms can actively reconfigure the cognitive system in preparation for switching to a new task…”
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Electrophysiological correlates of lateral interactions in human visual cortex by Khoe, W., Freeman, E., Woldorff, M.G., Mangun, G.R.

“…Detection thresholds for visually presented targets can be influenced by the nature of information in adjacent regions of the visual field. For example,…”
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Neural mechanisms of global and local processing. A combined PET and ERP study by Heinze, H J, Hinrichs, H, Scholz, M, Burchert, W, Mangun, G R

“…The neural mechanisms of hierarchical stimulus processing were investigated using a combined event-related potentials (ERPs) and positron emission tomography…”
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A Role for Top-Down Attentional Orienting during Interference between Global and Local Aspects of Hierarchical Stimuli by Weissman, D.H., Mangun, G.R., Woldorff, M.G.

“…Various models of selective attention propose that greater attention is allocated toward target stimuli when conflicting distracters make selection more…”
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Tracking the influence of reflexive attention on sensory and cognitive processing by HOPFINGER, Joseph B, MANGUN, George R

“…Previously, we demonstrated that reflexive attention facilitates early visual processing during form discrimination (Hopfinger & Mangun, 1998). In the present…”
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Form-from-motion: MEG evidence for time course and processing sequence by Schoenfeld, M A, Woldorff, M, Düzel, E, Scheich, H, Heinze, H-J, Mangun, G R

“…The neural mechanisms and role of attention in the processing of visual form defined by luminance or motion cues were studied using magnetoencephalography…”
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Sustained visual-spatial attention produces costs and benefits in response time and evoked neural activity by Mangun, George R., Buck, Lindy A.

“…This study investigated the simple reaction time (RT) and event-related potential (ERP) correlates of biasing attention towards a location in the visual field…”
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On the processing of spatial frequencies as revealed by evoked-potential source modeling by KENEMANS, J. L, BAAS, J. M. P, MANGUN, G. R, LIJFFIJT, M, VERBATEN, M. N

“…Visually evoked potentials (VEPs) are known to be sensitive to spatial frequency, especially in the time range between 50 and 100 ms post-stimulus. In two…”
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Integrating electrophysiology and neuroimaging of spatial selective attention to simple isolated visual stimuli by Mangun, G.R., Hinrichs, H., Scholz, M., Mueller-Gaertner, H.W., Herzog, H., Krause, B.J., Tellman, L., Kemna, L., Heinze, H.J.

“…Visual-spatial attention involves modulations of activity in human visual cortex as indexed by electrophysiological and functional neuroimaging measures. Prior…”
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Luminance and spatial attention effects on early visual processing by Johannes, S., Münte, T.F., Heinze, H.J., Mangun, G.R.

“…Event-related potentials (ERPs) were recorded from healthy subjects in response to unilaterally flashed high and low luminance bar stimuli presented randomly…”
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Combined expectancies: event-related potentials reveal the early benefits of spatial attention that are obscured by reaction time measures by Handy, T C, Green, V, Klein, R M, Mangun, G R

“…Visual spatial attention has been likened to a "spotlight" that selectively facilitates the perceptual processing of events at covertly attended locations…”
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