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Qin Y, Sheremet A, Cooper TL, Burke SN, Maurer AP. Nonlinear Theta-Gamma Coupling between the Anterior Thalamus and Hippocampus Increases as a Function of Running Speed. eNeuro 2023; 10:ENEURO.0470-21.2023. [PMID: 36858827 PMCID: PMC10027116 DOI: 10.1523/eneuro.0470-21.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 02/06/2023] [Accepted: 02/17/2023] [Indexed: 03/03/2023] Open
Abstract
The hippocampal theta rhythm strongly correlates to awake behavior leading to theories that it represents a cognitive state of the brain. As theta has been observed in other regions of the Papez circuit, it has been theorized that activity propagates in a reentrant manner. These observations complement the energy cascade hypothesis in which large-amplitude, slow-frequency oscillations reflect activity propagating across a large population of neurons. Higher frequency oscillations, such as gamma, are related to the speed with which inhibitory and excitatory neurons interact and distribute activity on the local level. The energy cascade hypothesis suggests that the larger anatomic loops, maintaining theta, drive the smaller loops. As hippocampal theta increases in power with running speed, so does the power and frequency of the gamma rhythm. If theta is propagated through the circuit, it stands to reason that the local field potential (LFP) recorded in other regions would be coupled to the hippocampal theta, with the coupling increasing with running speed. We explored this hypothesis using open-source simultaneous recorded data from the CA1 region of the hippocampus and the anterior dorsal and anterior ventral thalamus. Cross-regional theta coupling increased with running speed. Although the power of the gamma rhythm was lower in the anterior thalamus, there was an increase in the coupling of hippocampal theta to anterior thalamic gamma. Broadly, the data support models of how activity moves across the nervous system, suggesting that the brain uses large-scale volleys of activity to support higher cognitive processes.
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Affiliation(s)
- Yu Qin
- Engineering School of Sustainable Infrastructure and Environment, University of Florida, Gainesville, FL 32611
| | - Alex Sheremet
- Engineering School of Sustainable Infrastructure and Environment, University of Florida, Gainesville, FL 32611
- McKnight Brain Institute, Department of Neuroscience, University of Florida, Gainesville, FL 32610
| | - Tara L Cooper
- McKnight Brain Institute, Department of Neuroscience, University of Florida, Gainesville, FL 32610
| | - Sara N Burke
- McKnight Brain Institute, Department of Neuroscience, University of Florida, Gainesville, FL 32610
| | - Andrew P Maurer
- Engineering School of Sustainable Infrastructure and Environment, University of Florida, Gainesville, FL 32611
- McKnight Brain Institute, Department of Neuroscience, University of Florida, Gainesville, FL 32610
- Department of Biomedical Engineering, University of Florida, Gainesville, FL 32611
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Miskovic V, Keil A. Reliability of event-related EEG functional connectivity during visual entrainment: magnitude squared coherence and phase synchrony estimates. Psychophysiology 2014; 52:81-9. [PMID: 25039941 DOI: 10.1111/psyp.12287] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 06/07/2014] [Indexed: 11/29/2022]
Abstract
There is an increasing trend towards using noninvasive electroencephalography (EEG) to quantify functional brain connectivity. However, little is known about the psychometrics of commonly used functional connectivity indices. We examined the internal consistency of two different connectivity metrics: magnitude squared coherence and phase synchrony. EEG was recorded during visual entrainment to elicit a strong oscillatory component of known frequency. We found acceptable to good split-half reliability for the connectivity metrics when computing all possible pairwise interactions and after selecting an a priori seed reference. We also compared reliability estimates when using average referenced sensor versus reference independent current source density EEG data. Additional considerations were given to determining how reliability was influenced by factors including trial number, signal-to-noise ratio, and frequency content.
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Affiliation(s)
- Vladimir Miskovic
- Department of Psychology, State University of New York at Binghamton, Binghamton, New York, USA
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Pereda E, Quiroga RQ, Bhattacharya J. Nonlinear multivariate analysis of neurophysiological signals. Prog Neurobiol 2005; 77:1-37. [PMID: 16289760 DOI: 10.1016/j.pneurobio.2005.10.003] [Citation(s) in RCA: 608] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2005] [Revised: 10/06/2005] [Accepted: 10/07/2005] [Indexed: 02/08/2023]
Abstract
Multivariate time series analysis is extensively used in neurophysiology with the aim of studying the relationship between simultaneously recorded signals. Recently, advances on information theory and nonlinear dynamical systems theory have allowed the study of various types of synchronization from time series. In this work, we first describe the multivariate linear methods most commonly used in neurophysiology and show that they can be extended to assess the existence of nonlinear interdependence between signals. We then review the concepts of entropy and mutual information followed by a detailed description of nonlinear methods based on the concepts of phase synchronization, generalized synchronization and event synchronization. In all cases, we show how to apply these methods to study different kinds of neurophysiological data. Finally, we illustrate the use of multivariate surrogate data test for the assessment of the strength (strong or weak) and the type (linear or nonlinear) of interdependence between neurophysiological signals.
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Affiliation(s)
- Ernesto Pereda
- Department of Basic Physics, College of Physics and Mathematics, University of La Laguna, Avda. Astrofísico Fco. Sánchez s/n, 38205 La Laguna, Tenerife, Spain.
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Knyazeva MG, Innocenti GM. EEG coherence studies in the normal brain and after early-onset cortical pathologies. BRAIN RESEARCH. BRAIN RESEARCH REVIEWS 2001; 36:119-28. [PMID: 11690608 DOI: 10.1016/s0165-0173(01)00087-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Visual corpus callosum (CC) preferentially interconnects neurons selective for similar stimulus orientation near the representations of the vertical meridian. These properties allow studying the CC functionality with EEG coherence analysis. Iso-oriented and orthogonally-oriented gratings were presented to the two hemifields, either close to the vertical meridian or far from it. In animals with intact CC, and in man, interhemispheric coherence (ICoh) increased only with iso-oriented gratings presented near or crossing the vertical meridian. The increase was localized to occipital electrodes and was specific for the beta-gamma frequency band. Visual-stimulus induced changes in ICoh were studied in patients with early pathologies of the visual areas. From a girl with abnormal vision and severe bilateral lesion of the primary visual areas at 3 weeks, after premature birth at 30 weeks, we obtained no ICoh response until 9 years. In control children visual stimulation increased occipital ICoh at 6-7 years. From a young man having suffered similar lesions when he was 9 months older than the girl, no consistent increase in ICoh could be obtained. In a 14-year-old girl with congenital visual agnosia, no visible lesions, but with a temporal-occipital epileptic focus, ICoh responses were evoked both by iso-oriented, and by orthogonally-oriented gratings. In a young man with bilateral parieto-occipital microgyria extending into the calcarine sulcus, visual stimuli increased ICoh as in normal individuals, but the response was weaker. These cases are discussed in terms of development of CC connections and point to a variety of plastic changes in the cortical connectivity of children.
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Affiliation(s)
- M G Knyazeva
- Institute of Cellular Biology and Morphology, University of Lausanne, Rue du Bugnon 9, 1005, Lausanne, Switzerland.
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Bohdanecký Z, Lánský P, Radil T. An integral measure of the coherence function between pairs of EEG recordings. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1982; 54:587-90. [PMID: 6181983 DOI: 10.1016/0013-4694(82)90045-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Gersch W, Yonemoto J, Naitoh P. Automatic classification of multivariate EEGs using an amount of information measure and the eigenvalues of parametric time series model features. COMPUTERS AND BIOMEDICAL RESEARCH, AN INTERNATIONAL JOURNAL 1977; 10:297-318. [PMID: 872554 DOI: 10.1016/0010-4809(77)90044-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Abstract
Computer spectral analysis was performed on the EEGs of 6 subjects recorded during monocular foveal stimulation. Stimulus wavelength and subjective brightness were varied independently to determine their importance to changes in the ongoing EEG. The contribution of oculomotor control to these effects and the retinal area of their origin were also investigated. The major results were as follows. (1) Stimulation of the fovea reduced the amplitude of the EEG and the coherence between hemispheres at all frequencies, but most dramatically in the alpha band. (2) It increased the variance of EEG amplitudes and widths of spectral peaks in the alpha band and shifted these peaks to lower frequencies. (3) Auto-spectral intensities in the alpha band were enhanced slightly at brightness levels near photopic threshold, but were unaffected by changes in stimulus wavelength. (4) The fovea appeared to be the most effective retinal area in which irradiation attenuated ongoing alpha activity.
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Dumermuth G, Huber P, Kleiner B, Gasser T. Numerical analysis of electroencephalographic data. ACTA ACUST UNITED AC 1970. [DOI: 10.1109/tau.1970.1162144] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Delgado JM, Johnston VS, Wallace JD, Bradley RJ. Operant conditioning of amygdala spindling in the free chimpanzee. Brain Res 1970; 22:347-62. [PMID: 5505539 DOI: 10.1016/0006-8993(70)90476-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Pfurtscheller G. The use of spectral analysis to determine the cortical adaptation time course from extracranially recorded responses in man. MEDICAL & BIOLOGICAL ENGINEERING 1970; 8:367-72. [PMID: 5496684 DOI: 10.1007/bf02477664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Costin A, Hafemann D, Elazar Z, Adey WR. Posture and the role of vestibular and proprioceptive influences on neocortical, limbic, subcortical and cerebellar EEG activity. Brain Res 1970; 17:259-75. [PMID: 5308628 DOI: 10.1016/0006-8993(70)90081-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Some Guidelines from System Science for Studying Neural Information Processing. INTERNATIONAL REVIEW OF NEUROBIOLOGY 1970. [DOI: 10.1016/s0074-7742(08)60175-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Noda H, Manohar S, Adey WR. Spontaneous activity of cat hippocampal neurons in sleep and wakefulness. Exp Neurol 1969; 24:217-31. [PMID: 4306533 DOI: 10.1016/0014-4886(69)90016-8] [Citation(s) in RCA: 88] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Hanley J, Walter DO, Rhodes JM, Adey WR. Chimpanzee performance: computer analysis of electroencephalograms. Nature 1968; 220:879-81. [PMID: 4881006 DOI: 10.1038/220879a0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Brown BB. Frequency and phase of hippocampal theta activity in the spontaneously behaving cat. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1968; 24:53-62. [PMID: 4169747 DOI: 10.1016/0013-4694(68)90066-7] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Elazar Z, Adey WR. Electroencephalographic correlates of learning in subcortical and cortical structures. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1967; 23:306-19. [PMID: 4167764 DOI: 10.1016/0013-4694(67)90044-2] [Citation(s) in RCA: 54] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Elazar Z, Adey WR. Spectral analysis of low frequency components in the electrical activity of the hippocampus during learning. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1967; 23:225-40. [PMID: 4167921 DOI: 10.1016/0013-4694(67)90119-8] [Citation(s) in RCA: 123] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Dumermuth G, Flühler H. Some modern aspects in numerical spectrum analysis of multichannel electroencephalographic data. MEDICAL & BIOLOGICAL ENGINEERING 1967; 5:319-31. [PMID: 6043982 DOI: 10.1007/bf02479095] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Changes in electrical and conditioned-reflex activity after destruction of lateral hypothalamus in rabbits. ACTA ACUST UNITED AC 1967. [DOI: 10.1007/bf01124391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Adey WR. Hippocwmpal states and functional relations with corticosubcortical systems in attention and learning. PROGRESS IN BRAIN RESEARCH 1967; 27:228-45. [PMID: 4865089 DOI: 10.1016/s0079-6123(08)63102-7] [Citation(s) in RCA: 82] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Walter DO, Rhodes JM, Brown D, Adey WR. Comprehensive spectral analysis of human EEG generators in posterior cerebral regions. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1966; 20:224-37. [PMID: 4160390 DOI: 10.1016/0013-4694(66)90087-3] [Citation(s) in RCA: 81] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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ADEY WR, PORTER R, WALTER DO, BROWN TS. Prolonged effects of LSD on EEG records during discriminative performance in cat; evaluation by computer analysis. ACTA ACUST UNITED AC 1965; 18:25-35. [PMID: 14255024 DOI: 10.1016/0013-4694(65)90142-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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WALTER DO, ADEY WR. Analysis of Brain-Wave Generators as Multiple Statistical Time Series. IEEE Trans Biomed Eng 1965; 12:8-13. [PMID: 14288265 DOI: 10.1109/tbme.1965.4502335] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Walter DO. Spectral analysis for electroencephalograms: Mathematical determination of neurophysiological relationships from records of limited duration. Exp Neurol 1963; 8:155-81. [DOI: 10.1016/0014-4886(63)90042-6] [Citation(s) in RCA: 168] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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