Theta band activity in response to emotional expressions and its relationship with gamma band activity as revealed by MEG and advanced beamformer source imaging
Open accessAbstract
Neuronal oscillations in the theta and gamma bands have been shown to be important for cognition. Here we examined the temporal and spatial relationship between the two frequency bands in emotional processing using magnetoencephalography and an advanced dynamic beamformer source imaging method called synthetic aperture magnetometry. We found that areas including the amygdala, visual and frontal cortex showed significant event-related synchronization in both bands, suggesting a functional association of neuronal oscillations in the same areas in the two bands. However, while the temporal profile in both bands was similar in the amygdala, the peak in gamma band power was much earlier within both visual and frontal areas. Our results do not support a traditional view that the localizations of lower and higher frequencies are spatially distinct. Instead, they suggest that in emotional processing, neuronal oscillations in the gamma and theta bands may reflect, at least in visual and frontal cortex either different but related functional processes or, perhaps more probably, different computational components of the same functional process.
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In that MEG study, frontal and visual cortical regions showed differences in temporal profile: the event-related synchronization peak appeared significantly later in theta than in gamma.
“Interestingly, the frontal and visual cortical regions showed differences in the temporal profile of activity of these bands: the event-related synchronization peak appeared significantly later in the theta than in the gamma band (Luo et al., 2014).”
From The Functional Role of Dreaming in Emotional Processes (2019) · cites this paper as Luo et al., 2014
A waking MEG study on emotional expressions found theta and gamma activity in overlapping areas of amygdala, visual cortex and frontal cortex.
“A waking MEG study on emotional expressions found that both the theta and gamma activity occurring in overlapping areas of amygdala, visual cortex and frontal cortex (Luo et al., 2014).”
From The Functional Role of Dreaming in Emotional Processes (2019) · cites this paper as Luo et al., 2014
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References 53 · Cited by 31
Research works printed but not linked: 1
- MacLean P. D. (1990). The Triune Brain in Evolution. New York: Plenum Press
- Authors
- Luo, Q., Cheng, X., Holroyd, T., Xu, D., Carver, F., & Blair, R. J.
- Affiliations
- National Institute of Mental Health (US)
- Johns Hopkins University (US)
- Saint Louis University (US)
- Corresponding author
- Luo, Qian
- Venue
- Frontiers in Human Neuroscience
- Publisher
- Frontiers Media SA
- Published
- 2014
- Volume
- 7
- Pages
- 940-940
- ISSN
- 1662-5161 (ISSN-L)
- PMC
- PMC3910081
- OpenAlex
- W2008900354
- Cited by
- 31
- References
- 53
- Citations by year
- 2026: 2 · 2025: 2 · 2022: 2 · 2021: 2 · 2020: 2 · 2019: 5 · 2018: 3 · 2017: 5 · 2016: 2 · 2015: 3 · 2014: 2 · 2012: 1
- FWCI
- 2.23
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Frontiers in Human Neuroscience (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Institute of Mental Health
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neuroscience and Music Perception
- Keywords
- theta oscillations, gamma oscillations, event-related synchronization, amygdala, visual cortex, frontal cortex, synthetic aperture magnetometry, neural oscillations
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