EEG Microstate Analysis in Drug-Naive Patients with Panic Disorder

Kikuchi, Mitsuru; Koenig, Thomas; Munesue, Toshio; Hanaoka, Akira; Strik, Werner; Dierks, Thomas; Koshino, Yoshifumi; Minabe, Yoshio

doi:10.1371/journal.pone.0022912

Cited by 103 publications

(69 citation statements)

References 60 publications

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“…In our study, fitting parameters and topography of class D were comparable between the groups and previous studies, which indicates that patients with SD do not have a distinct frontal lobe dysfunction from an electrophysiological view. In addition, Kikuchi et al (2011) showed that panic disorder patient had decreased duration and contribution of class A, which indicated a correlation of class A with anxiety. In the current study, patients with SD evinced a normal class A, both topographically and in terms of the fitting parameters.…”

Section: Discussionmentioning

confidence: 91%

Discovering EEG resting state alterations of semantic dementia

Grieder

Koenig

Kinoshita

et al. 2016

Clinical Neurophysiology

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HighlightsResults: Topographical differences between the groups were found in microstate classes B and C, while microstate classes A and D were comparable. The data showed that the semantic dementia group had a peculiar microstate E, but the commonly found microstate C was lacking. Furthermore, the presence of microstate E was significantly correlated with lower MMSE and language scores. Conclusion: Alterations in resting EEG can be found in semantic dementia. Topographical shifts in microstate C might be related to semantic memory deficits. Significance: This is the first study that discovered resting state EEG abnormality in semantic dementia. The notion that resting EEG in this dementia subtype is normal has to be revised.

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Section: Discussionmentioning

confidence: 91%

Discovering EEG resting state alterations of semantic dementia

Grieder

Koenig

Kinoshita

et al. 2016

Clinical Neurophysiology

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“…Increased coverage of class A microstates was reported in individuals at high risk for psychosis (Andreou et al 2014) and in patients with panic disorder (Kikuchi et al 2011). Interestingly, the practice of TM is known to reduce anxiety (Eppley et al 1989;So and Orme-Johnson 2001).…”

Section: Clinical Comparisonsmentioning

confidence: 99%

EEG microstates during different phases of Transcendental Meditation practice

et al. 2017

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Two phases of Transcendental Meditation (TM)-transcending and undirected mentationwere compared to each other and to task-free resting using multichannel EEG recorded from 20 TM practitioners. An EEG microstate analysis identified four classes of microstates which were labeled A, B, C and D, based on their similarity to previously published classes. For each class of microstates, mean duration, coverage and occurrence were computed. Resting and transcending differed from undirected mentation with decreased prominence of Class A and increased prominence of Class D microstates. In addition, transcending showed decreased prominence of Class C microstates compared to undirected mentation. Based on previous findings on the functional significance of the microstate classes, the results indicate an increased reference to reality and decreased visualization during resting and transcending compared to undirected mentation. Also, our results indicate decreased saliency of internally generated mentations during transcending compared to undirected mentation reflecting a more detached and less evaluative processing. It is proposed that the continuous cycling through these two phases of meditation during a TM session might facilitate and train the flexible modulation of the parameters of these microstates of these particular classes which are known to be altered in psychiatric disorders. This might promote beneficial stabilizing effects for the practitioner of TM.

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“…Koenig et al [46] identified 4 normative microstate maps based on a sample of about 500 normal subjects. The meaning of each microstate map is still not precisely resolved, but certain classes, for example a microstate class labelled D, have been shown to be shortened in schizophrenia patients, especially during hallucinations [38,47,48,49,50,51], and the duration of another microstate class labelled A was shorter in patients suffering from panic disorder than in healthy controls [52]. Recently, some interesting studies reported a relationship of microstate maps and RSNs.…”

Section: Review Of the Currently Employed Qeeg Parametersmentioning

confidence: 99%

Integrating Different Aspects of Resting Brain Activity: A Review of Electroencephalographic Signatures in Resting State Networks Derived from Functional Magnetic Resonance Imaging

et al. 2015

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Electroencephalography (EEG) is an established measure in the field of brain resting state with a range of quantitative methods (qEEG) that yield unique information about neuronal activation and synchronization. Meanwhile, in the last decade, functional magnetic resonance imaging (fMRI) studies have revealed the existence of more than a dozen resting state networks (RSNs), and combined qEEG and fMRI have allowed us to gain understanding about the relationship of qEEG and fMRI-RSNs. However, the overall picture is less clear because there is no a priori hypothesis about which EEG features correspond well to fMRI-RSNs. We reviewed the associations of several types of qEEG features to four RSNs considered as neurocognitive systems central for higher brain processes: the default mode network, dorsal and ventral frontoparietal networks, and the salience network. We could identify 12 papers correlating qEEG and RSNs in adult human subjects and employing a simultaneous design under a no-task resting state condition. A systematic overview investigates which qEEG features replicably relate to the chosen RSNs. This review article leads to the conclusion that spatially delimited θ and whole/local α may be the most promising measures, but the time domain methods add important additional information.

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EEG Microstate Analysis in Drug-Naive Patients with Panic Disorder

Cited by 103 publications

References 60 publications

Discovering EEG resting state alterations of semantic dementia

Discovering EEG resting state alterations of semantic dementia

EEG microstates during different phases of Transcendental Meditation practice

Integrating Different Aspects of Resting Brain Activity: A Review of Electroencephalographic Signatures in Resting State Networks Derived from Functional Magnetic Resonance Imaging

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