Rugg M D, Dickens A M
Electroencephalogr Clin Neurophysiol. 1982 Feb;53(2):201-7. doi: 10.1016/0013-4694(82)90024-4.
EEG was recorded from P3 and P4 in 12 male subjects during a rest condition and while they performed a verbal and a visuospatial task. Power in the alpha and theta bands was derived from EEG epochs associated with task-related cognitive activity uncontaminated by response activity. Alpha power was significantly lower during performance on both tasks compared to the rest condition, but did not differ between tasks or hemispheres. Conversely, theta power was significantly higher during task performance, and, in the right hemisphere only, was higher in epochs recorded during the visuospatial as opposed to the verbal task. This difference between the tasks in right hemisphere theta correlated significantly with level of visuospatial performance as, to a lesser extent, did differences in left hemisphere theta. These results are discussed in terms of the sensitivity of different regions of the EEG spectrum to cognitive activity underlying performance on different types of task.
在12名男性受试者处于休息状态以及执行语言任务和视觉空间任务时，记录了P3和P4部位的脑电图（EEG）。α波和θ波频段的功率来自与任务相关的认知活动相关的EEG时段，且未受反应活动的污染。与休息状态相比，在执行两项任务时α波功率均显著降低，但在任务之间或半球之间没有差异。相反，在任务执行期间θ波功率显著更高，并且仅在右半球，视觉空间任务期间记录的时段中的θ波功率高于语言任务期间记录的时段。右半球θ波在任务之间的这种差异与视觉空间表现水平显著相关，左半球θ波的差异在较小程度上也与视觉空间表现水平相关。本文根据EEG频谱不同区域对不同类型任务执行过程中潜在认知活动的敏感性来讨论这些结果。
