Dimensional complexity of the EEG in patients with posttraumatic stress disorder

Jeong Ho Chae; Jaeseung Jeong; Bradley S. Peterson; Dai Jin Kim; Won Myong Bahk; Tae Youn Jun; Soo Yong Kim; Kwang Soo Kim

doi:10.1016/j.pscychresns.2003.05.002

Dimensional complexity of the EEG in patients with posttraumatic stress disorder

Jeong Ho Chae, Jaeseung Jeong, Bradley S. Peterson, Dai Jin Kim, Won Myong Bahk, Tae Youn Jun, Soo Yong Kim, Kwang Soo Kim

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

Recent electrophysiological studies have reported evidence of information processing abnormalities in patients with posttraumatic stress disorder (PTSD). The aim of this study is to examine dynamical complexity of the EEG in PTSD patients, which is thought to reflect information processing of the brain. Resting EEG recordings (32800 data points acquired continuously from 82 s of an EEG record) were obtained in 16 channels of 27 patients with PTSD from a mixed civilian trauma population and 14 healthy subjects. The correlation dimension (D₂) of the EEG was used to quantify the complexity of the cortical dynamics underlying the EEG signal. The PTSD patients were found to have lower D₂ values than those of the healthy subjects in most channels (Fp1, F8, C4, P4, T3, T4, T5, T6, and O1), indicating that PTSD patients have globally reduced complexity in their EEG waveforms. This study supports the hypotheses that PTSD patients exhibit disturbed cortical information processing, and that non-linear dynamical analysis of the EEG can be a tool for detecting changes in neurodynamics of the brain in PTSD.

Original language	English
Pages (from-to)	79-89
Number of pages	11
Journal	Psychiatry Research - Neuroimaging
Volume	131
Issue number	1
DOIs	https://doi.org/10.1016/j.pscychresns.2003.05.002
State	Published - 30 May 2004

Bibliographical note

Funding Information:
This study was supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology (J.J.).

Keywords

Dimensional complexity
Electroencephalography
Information processing
Non-linear dynamical analysis
Posttraumatic stress disorder

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.pscychresns.2003.05.002

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title = "Dimensional complexity of the EEG in patients with posttraumatic stress disorder",

abstract = "Recent electrophysiological studies have reported evidence of information processing abnormalities in patients with posttraumatic stress disorder (PTSD). The aim of this study is to examine dynamical complexity of the EEG in PTSD patients, which is thought to reflect information processing of the brain. Resting EEG recordings (32800 data points acquired continuously from 82 s of an EEG record) were obtained in 16 channels of 27 patients with PTSD from a mixed civilian trauma population and 14 healthy subjects. The correlation dimension (D2) of the EEG was used to quantify the complexity of the cortical dynamics underlying the EEG signal. The PTSD patients were found to have lower D2 values than those of the healthy subjects in most channels (Fp1, F8, C4, P4, T3, T4, T5, T6, and O1), indicating that PTSD patients have globally reduced complexity in their EEG waveforms. This study supports the hypotheses that PTSD patients exhibit disturbed cortical information processing, and that non-linear dynamical analysis of the EEG can be a tool for detecting changes in neurodynamics of the brain in PTSD.",

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note = "Funding Information: This study was supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology (J.J.).",

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AU - Peterson, Bradley S.

AU - Kim, Dai Jin

AU - Bahk, Won Myong

AU - Jun, Tae Youn

AU - Kim, Soo Yong

AU - Kim, Kwang Soo

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Dimensional complexity of the EEG in patients with posttraumatic stress disorder

Abstract

Bibliographical note

Keywords

UN SDGs

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