Home › Research › Risk factors
Electroencephalographic Finding in Idiopathic REM Sleep Behavior Disorder
Yuichi Inoue, Taeko Sasai, Koichi Hirata. Neuropsychobiology, 2015
Topic: Brain imaging, connectivity and assessment
The REM sleep behavior disorder (RBD) is a type of parasomnia manifested by vivid, often frightening dreams associated with motor behaviors during REM sleep, sometimes causing injuries to patients themselves or to their bed partners. The polysomnographic features of RBD include increased muscle activity during REM sleep (REM sleep without atonia). The majority of RBD-affected persons are older men. The disorder might be idiopathic (iRBD) or secondary to neurological disorders of various kinds. iRBD management with pharmaceutical measures is usually straightforward and effective. Several longitudinal studies have revealed that a high proportion of iRBD patients convert to α-synucleinopathies such as Parkinson's disease and dementia with Lewy body disease (DLB). Considering this, many studies have been conducted to identify common clinical markers between α-synucleinopathies and iRBD or indicators for the future development of α-synucleinopathies in iRBD patients. In this context, electroencephalographic (EEG) slowing occurring while awake and asleep, which is frequently observed in DLB, has received much attention. Clarification of the association between EEG slowing and the presence of mild cognitive impairment, which is also commonly seen in early stages of DLB, has been particularly expected to offer a breakthrough for the identification of cases which might convert to α-synucleinopathies. In this article, we introduce the progress in quantitative EEG research in iRBD during the past decade. We also discuss the relationship between EEG findings and cognitive decline as well as the mechanisms of EEG changes or cognitive abnormalities in patients with the disorder.
Key findings
- The REM sleep behavior disorder (RBD) is a type of parasomnia manifested by vivid, often frightening dreams associated with motor behaviors during REM sleep, sometimes causing injuries to patients themselves or to their bed partners.
- Several longitudinal studies have revealed that a high proportion of iRBD patients convert to α-synucleinopathies such as Parkinson's disease and dementia with Lewy body disease (DLB).
New to this subject? Start with our plain-English guide: Risk factors, ranked →
Study details
- Study designlongitudinal study
- Evidence strengthModerate
How this study scored 52/100
Published in a peer-reviewed journal, and it is a longitudinal study following the same people over time. Scored zero for sample size, effect reported, studied in people and randomised / blinded because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record, institution's track record, multi-centre collaboration and free to read, so those were left out: it earned 29 of the 56 points we could judge it on, which is 52 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (Neuropsychobiology) |
| Journal's citation record | — / 4 | No journal record from OpenAlex — left out of this score |
| Study design | 7 / 12 | A longitudinal study following the same people over time |
| Strength of evidence | 3 / 5 | Rated “moderate” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 2015 — within 20 year(s) of the newest study here |
| Sample size | 0 / 4 | Participant count not stated — scores zero (not stated in the record — scored 0) |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 0 / 3 | Not stated whether this was studied in people — scores zero (not stated in the record — scored 0) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | — / 7 | No citation count (not found in OpenAlex) — left out of this score |
| Citations per year | — / 5 | No citation count or no year — left out of this score |
| Impact for its field and year | — / 6 | No field-weighted citation impact (OpenAlex has none yet) — left out of this score |
| Cited by studies here | — / 6 | Not yet checked against this library's citation graph — left out of this score |
| Still being cited | — / 4 | No yearly citation counts — left out of this score |
| Senior author's track record | — / 4 | Senior author's record not available — left out of this score |
| Institution's track record | — / 3 | No institution listed in OpenAlex — left out of this score |
| Multi-centre collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 1 / 2 | Not in PubMed, but has a DOI |
| Free to read | — / 2 | Access not recorded — left out of this score |
| Points | 29 / 56 | Scored on 10 of 20 parts. We have no data for the rest, so they are left out: 29 of the 56 points we could judge it on is 52 out of 100. |
| Total | 52 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
Free copy unknown: no free-copy check has an answer for this record yet. That does not mean it is paywalled.
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. Check the citation against the original before you use it.
APA 7th
Inoue, Y., Sasai, T., & Hirata, K. (2015). Electroencephalographic Finding in Idiopathic REM Sleep Behavior Disorder. Neuropsychobiology. https://doi.org/10.1159/000363343
Vancouver
Inoue Y, Sasai T, Hirata K. Electroencephalographic Finding in Idiopathic REM Sleep Behavior Disorder. Neuropsychobiology. 2015. doi:10.1159/000363343.
BibTeX
@article{inoue2015-b7fa48f7,
author = {Inoue, Yuichi and Sasai, Taeko and Hirata, Koichi},
title = {{Electroencephalographic Finding in Idiopathic REM Sleep Behavior Disorder}},
journal = {Neuropsychobiology},
year = {2015},
doi = {10.1159/000363343},
url = {https://doi.org/10.1159/000363343}
}
Related studies in Risk factors
Also in Risk factors
356 studies in the library are filed under Risk factors with no topic tag they share with another; these are this study's neighbours in a fixed tour of them. The Risk factors hub.