The DOI matches its Crossref record; 50 of the 50 references it cites were found in a registry or an index.
Top-down Enhancement and Suppression of the Magnitude and Speed of Neural Activity
Abstract
Top-down modulation underlies our ability to selectively attend to relevant stimuli and to ignore irrelevant stimuli. Theories addressing neural mechanisms of top-down modulation are driven by studies that reveal increased magnitude of neural activity in response to directed attention, but are limited by a lack of data reporting modulation of neural processing speed, as well as comparisons with a perceptual (passive view) baseline necessary to evaluate the presence of enhancement and suppression. Utilizing functional MRI (fMRI) and event-related potential recordings (ERPs), we provide converging evidence that both themagnitude of neural activity and thespeed of neural processing are modulated by top-down influences. Furthermore, bothenhancement andsuppression occur relative to a perceptual baseline depending on task instruction. These findings reveal the fine degree of influence that goal-directed attention exerts upon activity within the visual association cortex. We further document capacity limitations in top-down enhancement corresponding with working memory performance deficits.
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Cites
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Cited by
Diamond, A. (2013) · Annual Review of Psychology · doi:10.1146/annurev-psych-113011-143750 · Cited by 13,268
The Cognitive Neuroscience of Working Memory
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Self-citationTop-down modulation: bridging selective attention and working memory
Gazzaley, A., & Nobre, A. C. (2012) · Trends in Cognitive Sciences · doi:10.1016/j.tics.2011.11.014 · Cited by 1,404
Sensory Processing in Autism: A Review of Neurophysiologic Findings
MARCO, E. J., HINKLEY, L. B. N., HILL, S. S., & NAGARAJAN, S. S. (2011) · Pediatric Research · doi:10.1203/pdr.0b013e3182130c54 · Cited by 1,112
Top-down suppression deficit underlies working memory impairment in normal aging
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Metadata
- Authors
- Gazzaley, A., Cooney, J. W., McEvoy, K., Knight, R. T., & D'Esposito, M.
- Venue
- Journal of Cognitive Neuroscience
- Publisher
- MIT Press - Journals
- Published
- 2005-03-01
- Volume
- 17
- Issue
- 3
- Pages
- 507-517
- ISSN
- 0898-929X (ISSN-L)
- 1530-8898
- OpenAlex
- W2143663807
- Cited by
- 462
- References
- 50
- FWCI
- 11.67
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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