Neural mechanisms of information storage in visual short-term memory.
Neural mechanisms of information storage in visual short-term memory.
复制标题
视觉短期记忆中信息存储的神经机制。
DOI：
10.1016/j.visres.2016.09.010
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发表时间：
2016-11
期刊：
影响因子：
1.8
通讯作者：
Serences, John T.
中科院分区：
文献类型：
--
作者：
Serences, John T.
短暂记忆短暂感觉信息的能力支持视觉搜索和与环境中相关刺激的行为互动。传统上，研究视觉短期记忆（STM）的神经基础的研究集中在前额叶皮层（PFC）的作用，在施加执行控制什么信息存储和它是如何自适应地用于指导行为。然而，支持STM中内容特定信息实际存储的神经基质更具争议性，一些人将此功能归因于PFC，另一些人则将其归因于最初编码传入感官刺激的早期视觉皮层的专门区域。与这些传统观点相反，我将回顾证据表明，内容特定信息可以灵活地保持在从早期视觉皮层到PFC的皮层层次结构中。虽然确定内容特定信息在哪里表示的因素还不完全清楚，认识到任务需求的重要性，更好地了解非尖峰神经编码可能有助于限制关于记忆如何在不同分辨率、不同时间尺度和存在分散注意力的信息的情况下维持的新理论。
The capacity to briefly memorize fleeting sensory information supports visual search and behavioral interactions with relevant stimuli in the environment. Traditionally, studies investigating the neural basis of visual short term memory (STM) have focused on the role of prefrontal cortex (PFC) in exerting executive control over what information is stored and how it is adaptively used to guide behavior. However, the neural substrates that support the actual storage of content-specific information in STM are more controversial, with some attributing this function to PFC and others to the specialized areas of early visual cortex that initially encode incoming sensory stimuli. In contrast to these traditional views, I will review evidence suggesting that content-specific information can be flexibly maintained in areas across the cortical hierarchy ranging from early visual cortex to PFC. While the factors that determine exactly where content-specific information is represented are not yet entirely clear, recognizing the importance of task-demands and better understanding the operation of non-spiking neural codes may help to constrain new theories about how memories are maintained at different resolutions, across different timescales, and in the presence of distracting information.
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