Heilman K M, Van Den Abell T
Neurology. 1980 Mar;30(3):327-30. doi: 10.1212/wnl.30.3.327.
Because hemiinattention is most commonly caused by right parietal lesions, it is possible that the left hemisphere attends to contralateral stimuli whereas the right attends to both contralateral and ipsilateral stimuli. We gave lateralized visual stimuli to 12 normal subjects and recorded the electroencephalograms. Desynchronization was determined by comparing the alpha power 1 second before and 1 second after a lateralized visual stimulus. Although the left parietal lobe desynchronized most after right-sided stimuli, the right parietal lobe desynchronized equally after right or left stimuli. These findings support the hypothesis that the right hemisphere is dominant for attention.
由于偏侧忽视最常见的原因是右侧顶叶病变，因此有可能左半球关注对侧刺激，而右半球同时关注对侧和同侧刺激。我们对12名正常受试者给予了单侧视觉刺激，并记录了脑电图。通过比较单侧视觉刺激前1秒和后1秒的阿尔法波功率来确定去同步化。尽管右侧刺激后左侧顶叶去同步化最为明显，但右侧顶叶在右侧或左侧刺激后去同步化程度相同。这些发现支持了右半球在注意力方面占主导地位的假说。
