Gottlieb Jacqueline, Balan Puiu, Oristaglio Jeff, Suzuki Mototaka
Department of Neuroscience, Columbia University, Kolb Research Annex, New York, NY 10032, USA.
Neurobiol Learn Mem. 2009 Feb;91(2):121-8. doi: 10.1016/j.nlm.2008.09.013. Epub 2008 Nov 8.
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.
外侧顶内区(LIP)是猴脑顶叶后部皮质的一部分,与空间注意力有关。我们回顾了最近的证据,这些证据表明LIP编码了外部环境的优先级图谱,该图谱指定了注意力的瞬时位置,并在各种行为任务中被激活。LIP中的优先级图谱由特定任务的运动、认知和动机变量塑造,其功能意义尚未完全明确。我们认为,这些调制代表了教学信号,大脑通过这些信号学会根据这些刺激、所需动作和预期结果之间的特定任务关联来识别各种刺激的注意力优先级。