Slotnick Scott D, Hopfinger Joseph B, Klein Stanley A, Sutter Erich E
Johns Hopkins University, Department of Psychology, 3400 North Charles Street, Baltimore, MD 21218, USA.
Neuroreport. 2002 May 7;13(6):773-8. doi: 10.1097/00001756-200205070-00008.
The aim of the present investigation was to determine the nature and spatial distribution of selective visual attention. Using cortical source localization of ERP data corresponding to 60 task-irrelevant stimuli across the visual field, we assessed attention effects on visual processing. Consistent with previous findings, visual processing was enhanced at the attended spatial location. In addition, this facilitation of processing extended from the attended location to the point of fixation resulting in a region of facilitation. Furthermore, a large region of inhibition was found surrounding this region of facilitation. The latter result is inconsistent with a simple facilitative spotlight model of attention and indicates that attention effects can be both facilitatory and inhibitory.
本研究的目的是确定选择性视觉注意的性质和空间分布。通过对视野中60个任务无关刺激对应的ERP数据进行皮层源定位，我们评估了注意对视觉加工的影响。与先前的研究结果一致，在被注意的空间位置，视觉加工得到增强。此外，这种加工促进从被注意位置延伸到注视点，形成一个促进区域。此外，在这个促进区域周围发现了一个大的抑制区域。后一结果与简单的注意促进聚光灯模型不一致，表明注意效应既可以是促进性的，也可以是抑制性的。
