The prefrontal cortex and working memory: physiology and brain imaging
Abstract
Sustained activity has been recorded in the prefrontal cortex during working memory tasks. First, we compare the anatomical distribution of this activity in humans and monkeys. Then, we show that it reflects many factors, maintenance of the items presented, preparation for the response, transformation of the items during the delay, task rules and task goals. Finally, we point out that sustained activity has also been recorded in other areas, such as the parietal cortex. We suggest that the key to prefrontal cortex lies not in the maintenance of sensory information but in the prospective use of that information for behaviour.
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Memory traces in neural signals are mixed with other task-dependent factors.
“Memory traces in the neural signals are mixed with other task-dependent factors44,45, and it has been debated whether other processes involved in goal-directed behavior could be mistakenly identified as memory, such as spatial attention46, motor planning47, anticipation of future events48, or timing49.”
From A reservoir of time constants for memory traces in cortical neurons (2011) · cites this paper as [45]
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““top-down” control of behavior such as when we need to adapt our behavior to a changing environment, override habitual responses or shift between different tasks (Miller and Cohen 2001; Passingham and Sakai 2004; Hoshi 2006; Mansouri et al. 2009).”
BackgroundA reservoir of time constants for memory traces in cortical neurons
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“Memory traces in the neural signals are mixed with other task-dependent factor”
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- Authors
- Passingham, D., & Sakai, K.
- Affiliations
- University of Oxford (GB)
- University College London (GB)
- Corresponding author
- Passingham, Dick
- Sakai, Katsuyuki
- Venue
- Current Opinion in Neurobiology
- Publisher
- Elsevier BV
- Published
- 2004-04
- Volume
- 14
- Issue
- 2
- Pages
- 163-168
- ISSN
- 0959-4388 (ISSN-L)
- OpenAlex
- W1973267026
- Cited by
- 207
- References
- 52
- Citations by year
- 2025: 2 · 2024: 7 · 2023: 6 · 2022: 4 · 2021: 4 · 2020: 3 · 2019: 5 · 2018: 3 · 2017: 7 · 2016: 7 · 2015: 10 · 2014: 5 · 2013: 6 · 2012: 13
- FWCI
- 1.72
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Current Opinion in Neurobiology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Wellcome Trust
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Keywords
- prefrontal cortex, working memory, sustained neural activity, human-monkey comparison, parietal cortex, response preparation, task rules, task goals, memory maintenance
- MeSH terms
- Animals, Cues, Discrimination Learning, Goals, Humans, Magnetic Resonance Imaging, Memory, Short-Term, Neural Pathways, Neuropsychological Tests, Species Specificity, Prefrontal Cortex
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