Related Experiment Video
Updated: Jan 11, 2026
10:38
A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
Published on: July 16, 2015
14.0K
Distinct and overlapping neural representations of refreshing versus refocusing during working memory maintenance.
1Department of Psychology, National Taiwan University. No. 1, Sec. 4, Roosevelt Road., Taipei 10617, Taiwan.
Cerebral Cortex (New York, N.Y. : 1991)
|November 17, 2025
Summary
This study shows how attention impacts working memory (WM) representations. Refocusing and refreshing stimuli involve both shared and unique brain activity patterns.
Area of Science:
- Cognitive Neuroscience
- Neuroimaging
Background:
- Working memory (WM) relies on internal representations.
- Attention plays a crucial role in modulating these representations.
- Distinguishing neural mechanisms of different attentional control strategies is key.
Purpose of the Study:
- To investigate the neural effects of retrospective and reflective attention on WM representations.
- To identify overlapping and distinct brain activation patterns associated with refocusing and refreshing stimuli.
- To elucidate the role of prefrontal and parietal cortices in attention-based WM modulation.
Main Methods:
- Functional magnetic resonance imaging (fMRI) in human participants.
- Cue-variant working memory tasks with retro-cue and refresh-cue conditions.
- Univariate, multivariate pattern analysis (MVPA), and functional connectivity analyses.
Main Results:
- Both retro-cue and refresh-cue engaged overlapping ventral occipitotemporal and posterior brain regions.
- Category-specific visual areas were selectively modulated by both attentional cues.
- MVPA revealed distinct effects: retro-cues influenced prefrontal cortex (PFC) patterns, while refresh-cues impacted parietal cortex (PPC) patterns.
- Functional connectivity showed links between PFC, PPC, and visual areas for both cues.
Conclusions:
- Refocusing and refreshing employ both shared and distinct neural mechanisms.
- Attention dynamically modulates internal representations in working memory.
- PFC and PPC exhibit differential sensitivity to retrospective vs. reflective attentional control.
More Related Videos
09:37Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
Published on: July 5, 2015
9.5K
10:43Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity
Published on: July 1, 2014
15.7K
Related Concept Videos
01:24Working Memory
774
Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
774
01:22Chunking and Rehearsal in Sensory Memory
546
Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of...
546
01:19High-Level and Low-Level Awareness
616
Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
616
01:16Interference and Decay
404
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
404
01:18Long-Term Memory
615
Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
615