Right-lateralized Brain Oscillations in Human Spatial Navigation
| Autor: | Brian Litt, Arne D. Ekstrom, Joshua J. Jacobs, Andreas Schulze-Bonhage, Jeremy B. Caplan, Joseph R. Madsen, Itzhak Fried, Michael J. Kahana, Igor O. Korolev, Gordon H. Baltuch |
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| Rok vydání: | 2010 |
| Předmět: |
Adult
Male Adolescent Movement Cognitive Neuroscience Spatial Behavior Neocortex Neuropsychological Tests Electroencephalography Spatial memory Brain mapping Functional Laterality Article Lateralization of brain function User-Computer Interface Young Adult Biological Clocks Orientation (mental) Orientation medicine Humans Child Electrodes Brain Mapping Epilepsy medicine.diagnostic_test Human brain Middle Aged Functional imaging medicine.anatomical_structure Female Psychology Goals Neuroscience |
| Zdroj: | Journal of Cognitive Neuroscience. 22:824-836 |
| ISSN: | 1530-8898 0898-929X |
| Popis: | During spatial navigation, lesion and functional imaging studies suggest that the right hemisphere has a unique functional role. However, studies of direct human brain recordings have not reported interhemisphere differences in navigation-related oscillatory activity. We investigated this apparent discrepancy using intracranial electroencephalographic recordings from 24 neurosurgical patients playing a virtual taxi driver game. When patients were virtually moving in the game, brain oscillations at various frequencies increased in amplitude compared with periods of virtual stillness. Using log-linear analysis, we analyzed the region and frequency specificities of this pattern and found that neocortical movement-related gamma oscillations (34–54 Hz) were significantly lateralized to the right hemisphere, especially in posterior neocortex. We also observed a similar right lateralization of gamma oscillations related to searching for objects at unknown virtual locations. Thus, our results indicate that gamma oscillations in the right neocortex play a special role in human spatial navigation. |
| Databáze: | OpenAIRE |
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