Evidence map›Paper›PMID 37013466›Full record

ArticleBMC neurology2023

EEG complexity correlates with residual consciousness level of disorders of consciousness.

Yangfeng Liu, Wentao Zeng, Na Pan, Xiaoyu Xia, Yonghua Huang, Jianghong He

Open access · goldAbstract read
In one paragraph

Article in BMC neurology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
5.6field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 26 citations in OpenAlex.

  1. The entropic brain today.Brain : a journal of neurology · 2026
    Review
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  7. "Awe-scillations": EEG spectral and complexity representations of awe.bioRxiv : the preprint server for biology · 2025
    Article
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  9. [Research on the relationship between resting-state spontaneous electroencephalography and task-evoked electroencephalography].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2025
    Review
  10. Cortical signatures linked to behavior quantitatively track arousal levels.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

Yangfeng Liu *Xijing 986 Hospital Department, Fourth Military Medical University, Xi'an, China.
Wentao Zeng *Department of Medical Imaging, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Na PanXijing 986 Hospital Department, Fourth Military Medical University, Xi'an, China.
Xiaoyu XiaThe Seventh Medical Center of PLA General Hospital, Beijing, China.
Yonghua HuangThe Seventh Medical Center of PLA General Hospital, Beijing, China.
Jianghong HeDepartment of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China. he_jianghong@yeah.net.
Air Force Medical University · CNChinese PLA General Hospital · CNBeijing Tian Tan Hospital · CNFirst Affiliated Hospital of Xi'an Jiaotong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectiveElectroencephalography (EEG) and neuroimaging measurements have been highly encouraged to be applied in clinics of disorders of consciousness (DOC) to improve consciousness detection. We tested the relationships between neural complexity measured on EEG and residual consciousness levels in DOC patients.

methodsResting-state EEG was recorded from twenty-five patients with DOC. Lempel-Ziv complexity (LZC) and permutation Lempel-Ziv complexity (PLZC) were measured on the EEG, and their relationships were analyzed with the consciousness levels of the patients.

resultsPLZC and LZC values significantly distinguished patients with a minimally conscious state (MCS), vegetative state/unresponsive wakefulness syndrome (VS/UWS), and healthy controls. PLZC was significantly correlated with the Coma Recovery Scale-Revised (CRS-R) scores of DOC patients in the global brain, particularly in electrodes locating in the anterior and posterior brain regions. Patients with higher CRS-R scores showed higher PLZC values. The significant difference in PLZC values between MCS and VS/UWS was mainly located in the bilateral frontal and right hemisphere regions.

conclusionNeural complexity measured on EEG correlates with residual consciousness levels of DOC patients. PLZC showed higher sensitivity than LZC in the classification of consciousness levels.

Indexed as

ConsciousnessConsciousness DisordersBrainComaElectroencephalographyHumansPersistent Vegetative StateDisorders of consciousnessEEGLempel–Ziv complexityMinimally conscious state

Identifiers

PMID37013466
PMCPMC10069047
OpenAlexW4362523527

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.