In natural environments, choices frequently must be made on the basis of complex and ambiguous streams of sensory input. There are advantages inherent to rapid decision making. Choices are better grounded, however, if information is acquired and accumulated over time. In primate visual motion perception, sensory evidence is accumulated up to a limit, at which point the brain commits to a choice. Recalling the models evoked for primate visual perception, recent studies in the rat vibrissal sensorimotor system, using a number of behavioral paradigms, show that perceptual decision making is characterized by the integration of sensory evidence over time. In this integrative process, vibrissal primary somatosensory cortex (vS1 and vS2) act not as the integrator, but as the distributor of sensory information to downstream regions.

中文翻译：

---

使大鼠晶须系统中的感官证据有意义。

在自然环境中，必须经常根据复杂而模棱两可的感觉输入来做出选择。快速决策具有内在的优势。但是，如果随着时间的推移获取和积累信息，则选择的依据会更好。在灵长类动物视觉运动感知中，感觉证据被积累到一个极限，此时大脑会做出选择。回忆起为灵长类动物视觉感知而建立的模型，最近在大鼠震颤感觉运动系统中的研究使用了许多行为范例，表明知觉决策的特征是随着时间的流逝，感觉证据的整合。在这种整合过程中，可触性的初级躯体感觉皮层（vS1和vS2）不充当积分器，而是充当向下游区域传递感官信息的角色。