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The representation of visual salience in monkey parietal cortex.

机译：猴子顶叶皮层视觉显着性的表示。

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摘要

When natural scenes are viewed, a multitude of objects that are stable in their environments are brought in and out of view by eye movements. The posterior parietal cortex is crucial for the analysis of space, visual attention and movement. Neurons in one of its subdivisions, the lateral intraparietal area (LIP), have visual responses to stimuli appearing abruptly at particular retinal locations (their receptive fields). We have tested the responses of LIP neurons to stimuli that entered their receptive field by saccades. Neurons had little or no response to stimuli brought into their receptive field by saccades, unless the stimuli were behaviourally significant. We established behavioural significance in two ways: either by making a stable stimulus task-relevant, or by taking advantage of the attentional attraction of an abruptly appearing stimulus. Our results show that under ordinary circumstances the entire visual world is only weakly represented in LIP. The visual representation in LIP is sparse, with only the most salient or behaviourally relevant objects being strongly represented.
机译：观看自然场景时，通过眼球运动可以将周围环境稳定的许多物体带入和带出视野。顶叶后皮质对于空间，视觉注意力和运动的分析至关重要。神经元的一个细分区域，即顶壁外侧区域（LIP），对在特定视网膜位置（其感受野）突然出现的刺激具有视觉反应。我们已经测试了LIP神经元对通过扫视进入其感受野的刺激的反应。神经元对扫视带入其感受野的刺激几乎没有反应，除非刺激在行为上是重要的。我们通过两种方式建立了行为上的重要性：要么通过与任务相关的稳定刺激，要么利用突然出现的刺激的注意力吸引。我们的结果表明，在通常情况下，整个视觉世界在LIP中只表现得很弱。 LIP中的视觉表示稀疏，只有最显着或行为相关的对象被强烈表示。

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