The DOI matches its Crossref record; 53 of the 53 references it cites were found in a registry or an index.
Gamma coherence and conscious perception
Abstract
BACKGROUND: High-frequency (e.g., gamma 30 to 50 Hz) coherent neural activity has been postulated to underlie binding of independent neural assemblies and thus integrate processing across distributed neuronal networks to achieve a unified conscious experience. Prior studies suggest that gamma activity may play a role in perceptual mechanisms, but design limitations raise concerns. Thus, controversy exists as to the hypothesis that gamma activity is necessary for perceptual awareness. In addition, controversy exists as to whether the primary sensory cortices are involved directly in the mechanisms of conscious perception or just in processes prior to conscious awareness. OBJECTIVE: To investigate the relation of gamma coherence and perception. METHODS: Digital intracranial electrocorticographic recordings from implanted electrodes were obtained in six patients with intractable epilepsy during a simple somatosensory detection task for near-threshold stimuli applied to the contralateral hand. Signal analyses were then conducted using a quantitative approach that employed two-way Hanning digital bandpass filters to compute running correlations across pairs of channels at various time epochs for each patient and each perception state across multiple bandwidths. RESULTS: Gamma coherence occurs in the primary somatosensory cortex approximately 150 to 300 milliseconds after contralateral hand stimuli that are perceived, but not for nonperceived stimuli, which did not differ in character/intensity or early somatosensory evoked potentials. CONCLUSION: The results are consistent with the possible direct involvement of primary sensory cortex in elemental awareness and with a role for gamma coherence in conscious perception.
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“Indeed,  and gamma frequency band phase synchrony is enhanced for consciously perceived stimuli (Meador et al., 2002;Gross et al., 2004;Nakatani et al., 2005;Palva et al., 2005) and correlates with conscious perception in binocular rivalry (Fries et al., 1997(Fries et al., , 2002;;Srinivasan et al., 1999;Doesburg et al., 2005).”
From Synchronization of neural activity across cortical areas correlates with conscious perception (2007) · cites this paper as Meador et al., 2002
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Cites
Modulation of Oscillatory Neuronal Synchronization by Selective Visual Attention
Fries, P., Reynolds, J. H., Rorie, A. E., & Desimone, R. (2001) · Science · doi:10.1126/science.1055465 · Cited by 2,786
Perception's shadow: long-distance synchronization of human brain activity
Rodriguez, E., George, N., Lachaux, J.-P., Martinerie, J., Renault, B., & Varela, F. J. (1999) · Nature · doi:10.1038/17120 · Cited by 1,915
Synchronization of cortical activity and its putative role in information processing and learning
Singer, W. (1993) · Annual Review of Physiology · doi:10.1146/annurev.ph.55.030193.002025 · Cited by 1,685
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Are we aware of neural activity in primary visual cortex?
Crick, F., & Koch, C. (1995) · Nature · doi:10.1038/375121a0 · Cited by 932
Temporal coding in the visual cortex: new vistas on integration in the nervous system
Engel, A. K., Peter König, B., Kreiter, A. K., Schillen, T. B., & Singer, W. (1992) · Trends in Neurosciences · doi:10.1016/0166-2236(92)90039-b · Cited by 754
Attention modulates synchronized neuronal firing in primate somatosensory cortex
Steinmetz, P. N., Roy, A., Fitzgerald, P. J., Hsiao, S. S., Johnson, K. O., & Niebur, E. (2000) · Nature · doi:10.1038/35004588 · Cited by 725
The Effect of Face Inversion on Activity in Human Neural Systems for Face and Object Perception
Haxby, J. V., Ungerleider, L. G., Clark, V. P., Schouten, J. L., Hoffman, E. A., & Martin, A. D. (1999) · Neuron · doi:10.1016/s0896-6273(00)80690-x · Cited by 657
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Sridharan, D., Levitin, D. J., & Menon, V. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0800005105 · Cited by 2,892
“Several previous studies have shown that there is increased gamma band activity during visual or tactile attention in primates and humans (16, 17), and during human conscious perception [intracranial EEG recordings, (18)].”
BackgroundMeditation states and traits: EEG, ERP, and neuroimaging studies.
Cahn, B. R., & Polich, J. (2006) · Psychological Bulletin · doi:10.1037/0033-2909.132.2.180 · Cited by 1,734
New vistas for α-frequency band oscillations
Palva, S., & Palva, J. M. (2007) · Trends in Neurosciences · doi:10.1016/j.tins.2007.02.001 · Cited by 1,418
“Also, the phenomenology of g oscillations in the human EEG is in line with a role in the formation of neuronal object representations [51], and, accordingly, g oscillations are present during the WM retention period [52], modulated by attention [53‐55] and correlated with conscious perception [56, 57 ].”
The ecological dynamics of decision making in sport
Araújo, D., Davids, K., & Hristovski, R. (2006) · Psychology of sport and exercise · doi:10.1016/j.psychsport.2006.07.002 · Cited by 937
Ray, S., Crone, N. E., Niebur, E., Franaszczuk, P. J., & Hsiao, S. S. (2008) · The Journal of Neuroscience · doi:10.1523/jneurosci.2848-08.2008 · Cited by 722
“…Fetz, 1992; Roelfsema et al., 1997), binding of distributed representations (Gray et al., 1989; Singer and Gray, 1995), working memory (Pesaran et al., 2002), associative learning (Miltner et al., 1999), and conscious perception (Singer and Gray, 1995; Rodriguez et al., 1999; Meador et al., 2002).”
Background
Metadata
- Authors
- Meador, K. J., Ray, P. G., Echauz, J. R., Loring, D. W., & Vachtsevanos, G. J.
- Affiliations
- Georgia Institute of Technology (US)
- Venue
- Neurology
- Published
- 2002-09-24
- Volume
- 59
- Issue
- 6
- Pages
- 847-854
- ISSN
- 0028-3878 (ISSN-L)
- 1526-632X
- OpenAlex
- W2001796590
- Cited by
- 161
- References
- 53
- Citations by year
- 2026: 2 · 2025: 8 · 2024: 5 · 2023: 7 · 2022: 4 · 2021: 7 · 2020: 2 · 2019: 4 · 2018: 3 · 2017: 7 · 2016: 6 · 2015: 7 · 2014: 10 · 2013: 7 · 2012: 7
- FWCI
- 2.69
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neurology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Social Sciences › Arts and Humanities › Philosophy › Philosophy and Theoretical Science
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Keywords
- gamma coherence, conscious perception, primary somatosensory cortex, perceptual awareness, neural binding, intracranial electrocorticography, epilepsy
- MeSH terms
- Adult, Consciousness, Electric Stimulation, Electrodes, Implanted, Electroencephalography, Epilepsy, Evoked Potentials, Somatosensory, Female, Humans, Male, Perception
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