Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai.
Behav Neurosci. 2021 Apr;135(2):245-254. doi: 10.1037/bne0000457.
Value signals in the brain are important for learning, decision-making, and orienting behavior toward relevant goals. Although they can play different roles in behavior and cognition, value representations are often considered to be uniform and static signals. Nonetheless, contextual and mixed representations of value have been widely reported. Here, we review the evidence for heterogeneity in value coding and dynamics in the orbitofrontal cortex. We argue that this diversity plays a key role in the representation of value itself and allows neurons to integrate value with other behaviorally relevant information. We also discuss modeling approaches that can dissociate potential functions of heterogeneous value codes and provide further insight into its importance in behavior and cognition. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
大脑中的价值信号对于学习、决策和引导行为朝向相关目标非常重要。尽管它们在行为和认知中可能发挥不同的作用，但价值表现通常被认为是统一和静态的信号。尽管如此，价值的上下文和混合表示已经被广泛报道。在这里，我们回顾了眶额皮层中价值编码和动态异质性的证据。我们认为，这种多样性在价值本身的表示中起着关键作用，并允许神经元将价值与其他行为相关的信息整合起来。我们还讨论了可以区分异构价值代码潜在功能的建模方法，并进一步深入了解其在行为和认知中的重要性。
