Neuronal Synchronization along the Dorsal Visual Pathway Reflects the Focus of Spatial Attention
| Autor: | Markus Siegel, Pascal Fries, Andreas K. Engel, Tobias H. Donner, Robert Oostenveld |
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| Rok vydání: | 2008 |
| Předmět: |
Male
Visual perception genetic structures Motion Perception Neuropsychological Tests Functional Laterality 0302 clinical medicine Parietal Lobe Perception and Action [DCN 1] Attention Cortical Synchronization Prefrontal cortex Evoked Potentials Visual Cortex Cerebral Cortex Neurons Brain Mapping 0303 health sciences medicine.diagnostic_test 120 000 Neuronal Coherence General Neuroscience Magnetoencephalography medicine.anatomical_structure SIGNALING Female Cues Psychology Adult Neuroscience(all) Biophysics Prefrontal Cortex Stimulus (physiology) Young Adult 03 medical and health sciences Cognitive neurosciences [UMCN 3.2] Visual memory Biological Clocks medicine Humans Visual Pathways 030304 developmental biology SYSBIO Visual cortex Space Perception 120 004 Integrating distributed brain processes SYSNEURO Neuroscience N2pc 030217 neurology & neurosurgery |
| Zdroj: | Neuron; Vol 60 Neuron, 60, 709-19 Neuron, 60, 4, pp. 709-19 |
| ISSN: | 0896-6273 |
| DOI: | 10.1016/j.neuron.2008.09.010 |
| Popis: | Contains fulltext : 71012.pdf (Publisher’s version ) (Closed access) 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 human dorsal visual pathway. We found that visuospatial attention modulated oscillatory synchronization between visual, parietal, and prefrontal cortex in a spatially selective fashion. Furthermore, synchronized activity within these stages was selectively modulated by attention, but with markedly distinct spectral signatures and stimulus dependence between regions. Our data indicate that regionally specific oscillatory synchronization at most stages of the human dorsal visual pathway may enhance the processing of attended visual stimuli and suggest that attentional selection is mediated by frequency-specific synchronization between prefrontal, parietal, and early visual cortex. |
| Databáze: | OpenAIRE |
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