视觉工作记忆精度表征机制及影响因素研究进展

Research on the Characterization Mechanism and Influencing Factors of Visual Working Memory Precision

精度是影响视觉工作记忆的关键因素,精度表征的神经机制对于提升工作记忆能力具有重要意义。已有的研究发现,工作记忆精度表征与整个视觉皮层和顶内沟的活动模式相关,详细的记忆特征在视觉皮层中以分布式激活模式进行编码,并中继到顶叶皮层,顶叶皮层的上侧顶内沟将注意导向有限数量的记忆表征,进而自上而下地控制视觉信息的表征进程。此外,工作记忆容量、注意力、负性情绪等因素均会影响视觉工作记忆的精度表征。今后的研究应重点关注视觉工作记忆精度表征在时间进程上的特征,以及以视觉工作记忆精度表征的影响因素为切入点的相关探索。

Precision is a key factor affecting visual working memory,and the neural mechanism of precision representation is of great significance for improving working memory ability.Previous studies have found that the precision of working memory representation is related to the activity patterns of the entire visual cortex and the parietal sulcus.Detailed memory features are encoded in a distributed activation pattern in the visual cortex and relayed to the parietal cortex.The upper parietal sulcus of the parietal cortex directs attention towards a limited number of memory representations,thereby controlling the representation process of visual information from top to bottom.In addition,factors such as working memory capacity,attention,and negative emotions can all affect the precision of visual working memory representation.Future research should explore the temporal characteristics of visual working memory precision representation and delve deeper into the influencing factors of visual working memory precision representation.