Parietal control of attentional guidance: The significance of sensory, motivational and motor factors
Parietal control of attentional guidance: The significance of sensory, motivational and motor factors
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DOI：
10.1016/j.nlm.2008.09.013
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发表时间：
2009-02-01
影响因子：
2.7
通讯作者：
Suzuki, Mototaka
中科院分区：
文献类型：
--
作者：
Gottlieb, Jacqueline;Balan, Puiu;Suzuki, Mototaka
外侧顶内区（LIP）是猴子后顶叶皮质的一部分，与空间注意力有关。我们回顾了最近的证据表明，LIP编码的外部环境，指定了瞬时的注意力所在地的优先级地图，并在各种行为任务被激活。LIP中的优先图由特定任务的运动、认知和动机变量形成，其功能意义尚未完全理解。我们认为，这些调制表示教学信号，大脑学习识别注意力优先级的各种刺激的基础上，这些刺激，所需的行动和预期的结果之间的特定任务的关联。(c)2008年爱思唯尔公司All rights reserved.
The lateral intraparietal area (LIP), a portion of monkey posterior parietal cortex, has been implicated in spatial attention. We review recent evidence showing that LIP encodes a priority map of the external environment that specifies the momentary locus of attention and is activated in a variety of behavioral tasks. The priority map in LIP is shaped by task-specific motor, cognitive and motivational variables, the functional significance of which is not entirely understood. We suggest that these modulations represent teaching signals by which the brain learns to identify attentional priority of various stimuli based on the task-specific associations between these stimuli, the required action and expected Outcome. (c) 2008 Elsevier Inc. All rights reserved.