Flexibility of foveal attention during ocular pursuit.
Flexibility of foveal attention during ocular pursuit.
复制标题
DOI：
10.1167/11.2.9
复制
发表时间：
2011-02-10
影响因子：
1.8
通讯作者：
Watamaniuk SN
中科院分区：
文献类型：
--
作者：
Heinen SJ;Jin Z;Watamaniuk SN
对自然物体的平滑追求需要灵活地分配注意力来观察特征。然而，据报道，在追逐过程中，注意力集中在中央凹。我们要问的是，在追捕过程中，中央凹的注意力是必须的，还是可以被解除。观察者跟踪一个由四个中心点包围的刺激点，并在其中一个点变暗时识别出它。在调暗之前熄灭中心点可以提高任务表现，这表明注意力被从中心点上释放了出来。为了确定中心点是否会自动占据注意力，我们通过添加随刺激移动的外围运动，为追踪系统提供了另一种感官信号。这也提高了识别性能，证明中心目标在追捕过程中不一定需要注意。中心点的识别性能也有所提高，说明背景的空间范围没有引起人们对外围点的注意；相反，外围运动将追求注意力从中心点中解放出来，提供更好的识别性能。结果表明，在追求过程中，注意力是可以灵活分配的，这意味着追求小目标和追求大目标的注意力资源来自不同的来源。
Smooth pursuit of natural objects requires flexible allocation of attention to inspect features. However, it has been reported that attention is focused at the fovea during pursuit. We ask here if foveal attention is obligatory during pursuit, or if it can be disengaged. Observers tracked a stimulus composed of a central dot surrounded by four others, and identified one of the dots when it dimmed. Extinguishing the center dot before the dimming improved task performance, suggesting that attention was released from it. To determine if the center dot automatically usurped attention, we provided the pursuit system with an alternative sensory signal by adding peripheral motion that moved with the stimulus. This also improved identification performance, evidence that a central target does not necessarily require attention during pursuit. Identification performance at the central dot also improved, suggesting that the spatial extent of the background did not attract attention to the periphery; instead, peripheral motion freed pursuit attention from the central dot, affording better identification performance. The results show that attention can be flexibly allocated during pursuit, and imply that attention resources for pursuit of small and large objects come from different sources.
登录
查看更多内容
影响因子：
5.4
作者：
Dodge, R
通讯作者：
Dodge, R
影响因子：
2.9
作者：
FISCHER, B;BOCH, R
通讯作者：
BOCH, R
影响因子：
2.9
作者：
KATO, I;HARADA, K;IKARASHI, T
通讯作者：
IKARASHI, T
影响因子：
29.3
作者：
FISCHER, B;WEBER, H
通讯作者：
WEBER, H
DOI：
10.1673/031.010.8301
发表时间：
2010
期刊：
Journal of insect science (Online)
影响因子：
--
作者：
Khani A;Moharramipour S
通讯作者：
Moharramipour S