Trends in Cognitive Sciences
ForumSerial Dependence across Perception, Attention, and Memory
Section snippets
Previous Memory Encroaches on Current Memory
One of the most remarkable aspects of our visual experience is that we perceive a stable environment despite the constantly changing image on the retina (e.g., from eye movements, blinks, and occlusions). A core function of visual working memory is to temporarily maintain representations that bridge disruptions and facilitate that stability. However, working memory is a limited system that sometimes fails to properly segregate recently activated (but now irrelevant) representations from those
Previous Perception Integrates with Current Perception
The perception of visual stimuli often follows a pattern that could be described as proactive interference: new stimuli appear more similar to just-seen stimuli than they truly are. In an orientation judgement task, for instance, perceived orientations are biased toward the angle of previously attended stimuli [4] (Figure 1D). This serial dependence occurs for a range of features, including numerosity [5] and complex stimuli like faces 6, 7 (Figure 1E), which suggests that it is a general
What Is the Value of Temporal Integration in Perception and Memory?
Intrusions by concurrent [9] and recent [2] memories have been considered a significant limitation on visual working memory capacity and quality, because they consume a finite representational space that would otherwise be used to maintain more relevant information 1, 2. This framing assumes that recent representations should be discarded, but neglects to consider the potential advantages of using related old information to scaffold new representations. Expectations can preactivate sensory
Neural Sources of Serial Dependence in Perception and Working Memory
Despite the potential utility of serial dependence for smoothing perception and memory, we know little about how the brain produces this behavior. One possibility is that it manifests at the earliest stages of cortical sensory processing, via increased sensitivity – perhaps due to short-term synaptic plasticity [12] – among neuronal ensembles that are responsive to the feature value of the previously attended stimulus [4]. Distributed functional magnetic resonance imaging (fMRI) patterns across
Concluding Remarks
Serial dependencies in perception and working memory have been studied separately, but the parallels between them highlight the value of synthesizing these research areas moving forward [10]. We can harness the careful psychophysics and modeling data arising from perceptual serial dependence research to illuminate principles of stability in working memory. Conversely, we can exploit many decades of working memory research to inform the study of stimulus representations and adaptive control in
Acknowledgments
We thank Mark D’Esposito for insightful feedback, as well as Derek Nee and Rob White for helpful discussions and comments on an earlier draft of the manuscript.
References (15)
- et al.
Brain mechanisms of proactive interference in working memory
Neuroscience
(2006) Serial dependence in the perception of faces
Curr. Biol.
(2014)‘Activity-silent’ working memory in prefrontal cortex: a dynamic coding framework
Trends Cogn. Sci.
(2015)- et al.
Distributed patterns of brain activity that lead to forgetting
Front. Hum. Neurosci.
(2011) Opposite effects of recent history on perception and decision
Curr. Biol.
(2017)- et al.
Proactive interference from items previously stored in visual working memory
Mem. Cognit.
(2008) Ghosts in the machine II: neural correlates of memory interference from the previous trial
Cereb. Cortex
(2017)