Neuronal Synchronization along the Dorsal Visual Pathway Reflects the Focus of Spatial Attention

@article{Siegel2008NeuronalSA,
  title={Neuronal Synchronization along the Dorsal Visual Pathway Reflects the Focus of Spatial Attention},
  author={Markus Siegel and Tobias H. Donner and Robert Oostenveld and Pascal Fries and Andreas Karl Engel},
  journal={Neuron},
  year={2008},
  volume={60},
  pages={709-719}
}
Oscillatory neuronal synchronization, within and between cortical areas, may mediate the selection of attended visual stimuli. However, it remains unclear at and between which processing stages visuospatial attention modulates oscillatory synchronization in the human brain. We thus combined magnetoencephalography (MEG) in a spatially cued motion discrimination task with source-reconstruction techniques and characterized attentional effects on neuronal synchronization across key stages of the… Expand
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References

SHOWING 1-10 OF 68 REFERENCES
Modulation of long-range neural synchrony reflects temporal limitations of visual attention in humans.
  • J. Gross, F. Schmitz, +4 authors A. Schnitzler
  • Computer Science, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 2004
TLDR
This work hypothesized that the network communicates by means of neural phase synchronization, and used magnetoencephalography to study transient long-range interarea phase coupling in a well studied attentionally taxing dual-target task (attentional blink). Expand
Topographic maps of visual spatial attention in human parietal cortex.
TLDR
Visualization of the distribution of temporal phases on a flattened representation of parietal cortex revealed at least two distinct topographically organized cortical areas within the intraparietal sulcus (IPS), each representing the contralateral visual field. Expand
α-Band Electroencephalographic Activity over Occipital Cortex Indexes Visuospatial Attention Bias and Predicts Visual Target Detection
TLDR
Electroencephalography data indicate that collateral modulations of posterior α-activity, the momentary bias of visuospatial attention, and imminent visual processing are linked, and suggest that the Momentary direction of attention, predicting spatial biases in imminent visualprocessing, can be estimated from a lateralization index of posterior β-activity. Expand
The neural mechanisms of top-down attentional control
TLDR
FMRI was used during a cued spatial-attention task to dissociate brain activity related to attentional control from that related to selective processing of target stimuli, indicating that Superior frontal, inferior parietal and superior temporal cortex were selectively activated by cues. Expand
Attentional modulation in visual cortex depends on task timing
TLDR
The attentional modulation of sensory neurons reflects a subject's anticipation of the timing of behaviourally relevant events and is shown to reflect the allocation of attention over time. Expand
Event-related brain potentials in the study of visual selective attention.
  • S. Hillyard, L. Anllo-Vento
  • Psychology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1998
Event-related brain potentials (ERPs) provide high-resolution measures of the time course of neuronal activity patterns associated with perceptual and cognitive processes. New techniques for ERP… Expand
Brain signals for spatial attention predict performance in a motion discrimination task.
TLDR
It is shown that subjects' performance can be predicted, trial-by-trial, by neural activity that precedes the onset of a sensory stimulus and that BOLD signals can be used to forecast human behavior. Expand
Increased Activity in Human Visual Cortex during Directed Attention in the Absence of Visual Stimulation
TLDR
The increased activity in visual cortex in the absence of visual stimulation may reflect a top-down bias of neural signals in favor of the attended location, which derives from a fronto-parietal network. Expand
Anticipatory Biasing of Visuospatial Attention Indexed by Retinotopically Specific α-Bank Electroencephalography Increases over Occipital Cortex
TLDR
Alpha-band (8-14 Hz) oscillatory EEG activity was examined with high-density scalp electrical recording during the cue-stimulus interval of an endogenous spatial cueing paradigm and results are consistent with active gating of uncued spatial locations. Expand
Selective visual attention and perceptual coherence
TLDR
It is proposed that voluntary shifts of attention are initiated by a transient control signal that "nudges the visual system from one coherent state to another" and is referred to as a "coherence field". Expand
...
1
2
3
4
5
...