Marois René, Ivanoff Jason
Department of Psychology, Center for Integrative and Cognitive Neurosciences, Vanderbilt Vision Research Center, Vanderbilt University, Nashville, TN, USA.
Trends Cogn Sci. 2005 Jun;9(6):296-305. doi: 10.1016/j.tics.2005.04.010.
Despite the impressive complexity and processing power of the human brain, it is severely capacity limited. Behavioral research has highlighted three major bottlenecks of information processing that can cripple our ability to consciously perceive, hold in mind, and act upon the visual world, illustrated by the attentional blink (AB), visual short-term memory (VSTM), and psychological refractory period (PRP) phenomena, respectively. A review of the neurobiological literature suggests that the capacity limit of VSTM storage is primarily localized to the posterior parietal and occipital cortex, whereas the AB and PRP are associated with partly overlapping fronto-parietal networks. The convergence of these two networks in the lateral frontal cortex points to this brain region as a putative neural locus of a common processing bottleneck for perception and action.
尽管人类大脑有着令人惊叹的复杂性和处理能力，但其容量却极为有限。行为研究突出了信息处理的三个主要瓶颈，它们会削弱我们有意识地感知、记住视觉世界并据此行动的能力，分别由注意瞬脱（AB）、视觉短时记忆（VSTM）和心理不应期（PRP）现象加以说明。对神经生物学文献的综述表明，VSTM存储的容量限制主要定位于顶叶后部和枕叶皮质，而AB和PRP则与部分重叠的额顶网络相关。这两个网络在外侧额叶皮质的交汇表明，该脑区是感知和行动共同处理瓶颈的一个假定神经位点。
