Posner M I, Dehaene S
Dept of Psychology, University of Oregon, Eugene 97403.
Trends Neurosci. 1994 Feb;17(2):75-9. doi: 10.1016/0166-2236(94)90078-7.
Recent brain-imaging and neurophysiological data indicate that attention is neither a property of a single brain area, nor of the entire brain. While attentional effects seem mediated by a relative amplification of blood flow and electrical activity in the cortical areas processing the attended computation, the details of how this is done through enhancement of attended or suppression of unattended items, or both, appear to depend on the task and brain-area studied. The origins of these amplification effects are to be found in specialized cortical areas of the frontal and parietal lobes that have been described as the anterior and posterior attention systems. These results represent substantial progress in the effort to determine how brain activity is regulated through attention. While many philosophical and practical issues remain in developing an understanding of attentional regulation, the new tools available should provide the basis for progress.
最近的脑成像和神经生理学数据表明，注意力既不是单个脑区的属性，也不是整个大脑的属性。虽然注意力效应似乎是由处理被关注计算的皮层区域中血流和电活动的相对增强介导的，但通过增强被关注项目或抑制未被关注项目或两者兼而有之来实现这一过程的细节，似乎取决于所研究的任务和脑区。这些增强效应的起源可在额叶和顶叶的专门皮层区域中找到，这些区域被称为前注意力系统和后注意力系统。这些结果代表了在确定大脑活动如何通过注意力进行调节方面的重大进展。虽然在发展对注意力调节的理解方面仍存在许多哲学和实际问题，但现有的新工具应能为取得进展提供基础。
