Right-lateralized brain oscillations in human spatial navigation.
Right-lateralized brain oscillations in human spatial navigation.
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DOI:
10.1162/jocn.2009.21240
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发表时间:
2010-05
影响因子:
3.2
通讯作者:
Kahana MJ
中科院分区:
文献类型:
--
作者:
Jacobs J;Korolev IO;Caplan JB;Ekstrom AD;Litt B;Baltuch G;Fried I;Schulze-Bonhage A;Madsen JR;Kahana MJ
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.
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DOI:
10.1080/13803390500434359
发表时间:
2006-11-01
影响因子:
2.2
作者:
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通讯作者:
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期刊:
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影响因子:
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影响因子:
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