Gamma Oscillations Correlate with Working Memory Load in Humans
Open accessAbstract
Functional imaging of human cortex implicates a diverse network of brain regions supporting working memory - the capacity to hold and manipulate information for short periods of time. Although we are beginning to map out the brain networks supporting working memory, little is known about its physiological basis. We analyzed intracranial recordings from two epileptic patients as they performed a working memory task. Spectral analyses revealed that, in both patients, gamma (30-60 Hz) oscillations increased approximately linearly with memory load, tracking closely with memory load over the course of the trial. This constitutes the first evidence that gamma oscillations, widely implicated in perceptual processes, support the maintenance of multiple items in working memory.
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In humans, gamma oscillations are associated with increased working memory load.
“Gamma oscillations in humans are also associated with increased working memory load [79].”
From Parvalbumin interneuron vulnerability and brain disorders (2021) · cites this paper as [79]
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References 28 · Cited by 766
Research works printed but not linked: 1
- Baddeley AD, Hitch GJ (1974) Working memory. In: The psychology of learning and motivation: advances in research and theory (Bower GH, ed.), vol. 8, pp. 47-90. New York: Academic Press.
- Authors
- Howard, M. W.
- Affiliations
- Syracuse University (US)
- Corresponding author
- Howard, M. W.
- ORCID
- Howard, M. W.
- Venue
- Cerebral Cortex
- Publisher
- Oxford University Press (OUP)
- Published
- 2003-12-01
- Volume
- 13
- Issue
- 12
- Pages
- 1369-1374
- ISSN
- 1047-3211 (ISSN-L)
- 1460-2199
- OpenAlex
- W2165702601
- Cited by
- 766
- References
- 28
- Citations by year
- 2026: 13 · 2025: 24 · 2024: 32 · 2023: 31 · 2022: 29 · 2021: 39 · 2020: 40 · 2019: 43 · 2018: 40 · 2017: 33 · 2016: 39 · 2015: 56 · 2014: 36 · 2013: 43 · 2012: 34
- FWCI
- 6.84
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Cerebral Cortex (publishedVersion)
- PubMed (publishedVersion)
- Syracuse University Libraries (Syracuse University) (submittedVersion, cc-by)
- FreiDok plus (Universitätsbibliothek Freiburg) (submittedVersion)
- Funders
- Syracuse University
- National Institute of Mental Health (MH-61975, MH55687, R01MH061975)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Keywords
- gamma oscillations, working memory, memory load, intracranial recordings, epilepsy patients, spectral analysis, memory maintenance
- MeSH terms
- Brain Mapping, Cerebral Cortex, Child, Epilepsy, Female, Humans, Male, Memory, Short-Term, Neurons, Statistics as Topic
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