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Research article summary:
Functional-anatomic correlates of sustained and transient processing components engaged during controlled retrieval.
Abstract Extract:
Controlled processing is central to episodic memory retrieval. In the present study, neural correlates of sustained, as well as transient, processing components were explored during controlled retrieval using a mixed blocked event-related functional ... (Full abstract text below) Published 2003Sep
in Journal: J Neurosci
(Language : eng)
Full Pubmed Extract
This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:
1. J Neurosci.
2003 Sep;23(24):8460-70
Functional-anatomic correlates of sustained and transient processing components engaged during controlled retrieval.
Velanova K, Jacoby LL, Wheeler ME, McAvoy MP, Petersen SE, Buckner RL
Department of Psychology, Washington University, St. Louis, Missouri 63130, USA.
Controlled processing is central to episodic memory retrieval. In the present study, neural correlates of sustained, as well as transient, processing components were explored during controlled retrieval using a mixed blocked event-related functional magnetic resonance imaging paradigm. Results from 29 participants suggest that certain regions in prefrontal cortex, including anterior left inferior prefrontal cortex near Brodmann's Area (BA) 45/47 and more posterior and dorsal left prefrontal cortex near BA 44, increase activity on a trial-by-trial basis when high levels of control are required during retrieval. Providing direct evidence for control processes that participate on an ongoing basis, right frontal-polar cortex was strongly associated with a sustained temporal profile during high control retrieval conditions, as were several additional posterior regions, including those within left parietal cortex. These results provide evidence for functional dissociation within prefrontal cortex. Frontal-polar regions near BA 10 associate with temporally extended control processes that may underlie an attentional set, or retrieval mode, during controlled retrieval, whereas more posterior prefrontal regions associate with individual retrieval attempts. In particular, right frontal-polar cortex involvement in sustained processes reconciles a number of disparate findings that have arisen when contrasting blocked-trial paradigms with event-related paradigms.
PMID : 13679414 [PubMed - Indexed for MEDLINE]
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Full Author Information
| First Name | LastName | Initials |
| Katerina | Velanova | K |
| Larry L | Jacoby | LL |
| Mark E | Wheeler | ME |
| Mark P | McAvoy | MP |
| Steve E | Petersen | SE |
| Randy L | Buckner | RL |
Affiliation: Department of Psychology, Washington University, St. Louis, Missouri 63130, USA.
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Category links from this article:- Adolescent
- Adult
- Brain - anatomy & histology, physiology
- Brain Mapping - methods
- Female
- Frontal Lobe - physiology
- Humans
- Magnetic Resonance Imaging
- Male
- Memory - physiology
- Mental Recall - physiology
- Parietal Lobe - physiology
- Reaction Time - physiology
- Recognition (Psychology) - physiology
- Reference Values
- Verbal Behavior - physiology
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