It has recently been proposed that working memory might better be conceptualized as a limited resource that is distributed flexibly among all items to be maintained in memory.
Although a number of WM operations are likely to occur during response selection, the current study was particularly interested in the contribution of this neural network to WM-based response selection when compared to the selection of an item from a list being maintained in memory, during a verbal learning task.
Thus, the ability of the D2000 group to scale their reach trajectories to veridical target size mandated that a sensory representation be maintained in memory until the time of response cuing.
However, a significant impairment emerged when additional items had to be maintained in memory.
□ The sparsified algorithm maintains lists L i of candidates for each pair (j', d j', j ) since only the lists for one i need to be maintained in memory at the same time.
It is possible that trying to remember orientations creates a situation in which the spatial position of the stimuli might still be maintained in memory, despite this being irrelevant to the task, whereas remembering the colors of items might not lead to automatic maintenance of position information.
Results such as these, together with behavioural indices of working memory suggestive of theta-modulated gamma-band mechanisms (gamma/theta = individual working memory span; 40/6≈7), have led to the hypothesis that items are maintained in working memory by assemblies of representational cell coalitions that are refreshed at a gamma frequency during each theta cycle [see 61].
The primate lateral prefrontal cortex (LPFC) encodes visual stimulus features while they are perceived and while they are maintained in working memory.
According to one view, objects in memory are maintained in a few independent "slots" (Luck & Vogel, 1997) that can be maintained in an abstract manner, divorced from the way that visual information was originally perceived (Woodman, Vogel, & Luck, 2012).
