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Increased Activity in Human Visual Cortex during Directed Attention in the Absence of Visual Stimulation
When subjects direct attention to a particular location in a visual scene, responses in the visual cortex to stimuli presented at that location are enhanced, and the suppressive influences of nearbyExpand
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Mechanisms of visual attention in the human cortex.
A typical scene contains many different objects that, because of the limited processing capacity of the visual system, compete for neural representation. The competition among multiple objects inExpand
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Mechanisms of directed attention in the human extrastriate cortex as revealed by functional MRI.
We show that when multiple stimuli are present simultaneously in the visual field, their cortical representations within the object recognition pathway interact in a competitive, suppressive fashion. Expand
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Modulation of sensory suppression: implications for receptive field sizes in the human visual cortex.
Neurophysiological studies in monkeys show that when multiple visual stimuli appear simultaneously in the visual field, they are not processed independently, but rather interact in a mutuallyExpand
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Topographic maps in human frontal and parietal cortex
Retinotopic mapping of functional magnetic resonance (fMRI) responses evoked by visual stimuli has resulted in the identification of many areas in human visual cortex and a description of theExpand
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Representation of Eye Movements and Stimulus Motion in Topographically Organized Areas of Human Posterior Parietal Cortex
Recent imaging studies have shown that the human posterior parietal cortex (PPC) contains four topographically organized areas along the intraparietal sulcus (IPS1–IPS4). Using a memory-guidedExpand
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Neural representations of faces and body parts in macaque and human cortex: a comparative FMRI study.
Single-cell studies in the macaque have reported selective neural responses evoked by visual presentations of faces and bodies. Consistent with these findings, functional magnetic resonance imagingExpand
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Rhythmic Sampling within and between Objects despite Sustained Attention at a Cued Location
The brain directs its limited processing resources through various selection mechanisms, broadly referred to as attention. The present study investigated the temporal dynamics of two such selectionExpand
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Topographic maps in human frontal cortex revealed in memory-guided saccade and spatial working-memory tasks.
We used fMRI at 3 Tesla and improved spatial resolution (2 x 2 x 2 mm(3)) to investigate topographic organization in human frontal cortex using memory-guided response tasks performed at 8 or 12 peripheral locations arranged clockwise around a central fixation point. Expand
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Mechanisms of Spatial Attention Control in Frontal and Parietal Cortex
Theories of spatial attentional control have been largely based upon studies of patients suffering from visuospatial neglect, resulting from circumscribed lesions of frontal and posterior parietalExpand
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