Posner M I, Walker J A, Friedrich F J, Rafal R D
J Neurosci. 1984 Jul;4(7):1863-74. doi: 10.1523/JNEUROSCI.04-07-01863.1984.
The cognitive act of shifting attention from one place in the visual field to another can be accomplished covertly without muscular changes. The act can be viewed in terms of three internal mental operations: disengagement of attention from its current focus, moving attention to the target, and engagement of the target. Our results show that damage to the parietal lobe produces a deficit in the disengage operation when the target is contralateral to the lesion. Effects may also be found on engagement with the target. The effects of brain injury on disengagement of attention seem to be unique to the parietal lobe and do not appear to occur with our frontal, midbrain, and temporal control series. These results confirm the close connection between parietal lobes and selective attention suggested by single cell recording. They indicate more specifically the role that parietal function has on attention and suggest one mechanism of the effects of parietal lesions reported in clinical neurology.
将注意力从视野中的一个位置转移到另一个位置的认知行为可以在不发生肌肉变化的情况下秘密完成。这一行为可以从三种内部心理操作的角度来看待：将注意力从当前焦点上脱离、将注意力转移到目标上以及对目标的锁定。我们的研究结果表明，当目标位于损伤对侧时，顶叶损伤会导致脱离操作出现缺陷。在对目标的锁定方面也可能会发现影响。脑损伤对注意力脱离的影响似乎是顶叶所特有的，在我们的额叶、中脑和颞叶对照系列中并未出现。这些结果证实了单细胞记录所表明的顶叶与选择性注意之间的紧密联系。它们更具体地指出了顶叶功能在注意力方面所起的作用，并提出了临床神经学中所报道的顶叶病变影响的一种机制。
