Foxe J J, Simpson G V, Ahlfors S P
Department of Neuroscience, Albert Einstein College of Medicine, Rose F. Kennedy Center, Bronx, NY 10461, USA.
Neuroreport. 1998 Dec 1;9(17):3929-33. doi: 10.1097/00001756-199812010-00030.
High-density eeg recordings revealed sensory specific modulation of anticipatory parieto-occipital approximately 10 Hz oscillatory activity when visually presented word cues instructed subjects in an intermodal selective attention paradigm. Cueing attention to the auditory features of imminent compound audio-visual stimuli resulted in significantly higher approximately 10 Hz amplitude in the period preceding onset of this stimulus than when attention was cued to the visual features. We propose that this parieto-occipital approximately 10 Hz activity reflects a disengaged visual attentional system in preparation for anticipated auditory input that is attentionally more relevant. Conversely, lower approximately 10 Hz activity during the attend-visual condition may reflect active engagement of parieto-occipital areas in the anticipatory period. These results support models implicating parieto-occipital areas in the directing and maintenance of visual attention.
高密度脑电图记录显示，在跨模态选择性注意范式中，当视觉呈现单词线索指导受试者时，预期的顶枕叶约10Hz振荡活动存在感觉特异性调制。提示对即将到来的复合视听刺激的听觉特征的注意，在该刺激开始前的时间段内，约10Hz的振幅显著高于提示对视觉特征的注意时。我们认为，这种顶枕叶约10Hz的活动反映了一个脱离的视觉注意力系统，为预期的更相关的听觉输入做准备。相反，在注意视觉条件下较低的约10Hz活动可能反映了顶枕叶区域在预期期的积极参与。这些结果支持了将顶枕叶区域与视觉注意力的引导和维持相关联的模型。
