Temporally Dissociable Mechanisms of Spatial, Feature, and Motor Selection during Working Memory–guided Behavior
Temporally Dissociable Mechanisms of Spatial, Feature, and Motor Selection during Working Memory–guided Behavior
复制标题
工作记忆引导行为过程中空间、特征和运动选择的时间分离机制
DOI：
10.1162/jocn_a_02061
复制
发表时间：
2023
影响因子：
3.2
通讯作者：
Weese, Rachel
中科院分区：
文献类型：
--
作者：
Ester, Edward;Weese, Rachel
Working memory (WM) is a capacity- and duration-limited system that forms a temporal bridge between fleeting sensory phenomena and possible actions. But how are the contents of WM used to guide behavior? A recent high-profile study reported evidence for simultaneous access to WM content and linked motor plans during WM-guided behavior, challenging serial models where task-relevant WM content is first selected and then mapped on to a task-relevant motor response. However, the task used in that study was not optimized to distinguish the selection of spatial versus nonspatial visual information stored in memory, nor to distinguish whether or how the chronometry of selecting nonspatial visual information stored in memory might differ from the selection of linked motor plans. Here, we revisited the chronometry of spatial, feature, and motor selection during WM-guided behavior using a task optimized to disentangle these processes. Concurrent EEG and eye position recordings revealed clear evidence for temporally dissociable spatial, feature, and motor selection during this task. Thus, our data reveal the existence of multiple WM selection mechanisms that belie conceptualizations of WM-guided behavior based on purely serial or parallel visuomotor processing.
