Suicidal thoughts, behaviors, and event‐related potentials: A systematic review and meta‐analysis

2021 ◽  
Author(s):  
Austin J. Gallyer ◽  
Sean P. Dougherty ◽  
Kreshnik Burani ◽  
Brian J. Albanese ◽  
Thomas E. Joiner ◽  
...  
2015 ◽  
Vol 77 (11) ◽  
pp. 951-958 ◽  
Author(s):  
Mitja Bodatsch ◽  
Anke Brockhaus-Dumke ◽  
Joachim Klosterkötter ◽  
Stephan Ruhrmann

Author(s):  
Austin J. Gallyer ◽  
Sean P. Dougherty ◽  
Kreshnik Burani ◽  
Brian J. Albanese ◽  
Thomas E. Joiner ◽  
...  

AbstractBackgroundSuicidal thoughts and behaviors (STBs) are thought to be the result, at least in part, of abnormalities in various neural systems. Event-related potentials (ERPs) are a useful method for studying neural activity and can be leveraged to study neural deficits related to STBs; however, it is unknown how effective ERPs are at differentiating various STB groups. The present meta-analysis examined how well ERPs can differentiate (a) those with and without suicidal ideation, (b) those with and without suicide attempts, (c) those with different levels of suicide risk, and (d) differences between those with suicide attempts versus those with suicidal ideation only.MethodOur meta-analysis included 208 effect sizes from 2,517 participants from 27 studies. We used a random-effects meta-analysis using a restricted maximum likelihood estimator with robust variance estimation.ResultsOur qualitative review found that for each ERP and STB combination, the literature is highly mixed. Our meta-analyses found a small-to-moderate relationship between ERPs and suicidal ideation, suicide attempt, suicide risk, and differences in ERPs between those with suicide attempts versus those with suicidal ideation only. We also found evidence that the literature may be suffering from small-sample bias and poor statistical power.ConclusionsOur results suggest that ERPs may complement other approaches, such as fMRI, in the study of the neurobiology of individuals with STBs. However, the current literature is severely underpowered to detect the effect sizes estimated in this meta-analysis. We recommend large-scale collaboration and improvements in measurement practices to combat the issues in this literature.


2018 ◽  
Vol 129 (9) ◽  
pp. 1854-1865 ◽  
Author(s):  
Anne M. Morsel ◽  
Manuel Morrens ◽  
Monica Dhar ◽  
Bernard Sabbe

2020 ◽  
Vol 63 (1) ◽  
Author(s):  
Steinn Steingrimsson ◽  
Gorana Bilonic ◽  
Ann-Catrin Ekelund ◽  
Tomas Larson ◽  
Ida Stadig ◽  
...  

Abstract Background. Post-traumatic stress disorder (PTSD) is debilitating for patients and society. There are a number of treatment methods albeit not all patients respond to these and an interesting method using electroencephalography-based neurofeedback (EEG-NF) has become more prominent in recent years. This systematic review aimed to assess whether EEG-NF, compared with sham NF, other treatment, or no treatment, is effective for PTSD. Primary outcomes were self-harm, PTSD symptoms, level of functioning and health-related quality of life. Methods. Systematic literature searches for randomized controlled trials (RCTs) were conducted in six databases. Random effects meta-analysis was performed. Certainty of evidence was assessed using the Grading of Recommendations Assessment, Development, and Evaluation. Results. Four RCTs were included (123 participants). Suicidal thoughts were significantly reduced after EEG-NF compared with a waiting list in a small study. PTSD symptoms were assessed in all studies with different instruments. Results were consistently in favor of EEG-NF with large effect sizes (standardized mean difference −2.30 (95% confidence interval: −4.37 to −0.24). One study reported significantly improved level of executive functioning and one study a reduction in use of psychotropic medication. Complications were scarcely reported. Certainty of evidence was assessed as very low for the four assessed outcomes. Conclusions. Based on four RCTs, with several study limitations and imprecision, it is uncertain whether EEG-NF reduces suicidal thoughts, PTSD symptoms, medication use, or improves function. Although all studies showed promising results, further studies are needed to increase the certainty of evidence.


2015 ◽  
Vol 45 (5) ◽  
pp. 633-649 ◽  
Author(s):  
Craig J. Bryan ◽  
James E. Griffith ◽  
Brian T. Pace ◽  
Kent Hinkson ◽  
AnnaBelle O. Bryan ◽  
...  

Author(s):  
Dilushi Chandrakumar ◽  
Daniel Feuerriegel ◽  
Stefan Bode ◽  
Megan Grech ◽  
Hannah A. D. Keage

2020 ◽  
Author(s):  
Elizabeth R. Paitel ◽  
Marielle R. Samii ◽  
Kristy A Nielson

This systematic review examined whether event-related potentials (ERPs) during higher cognitive processing can detect subtle, early signs of neurodegenerative disease. Original, empirical studies retrieved from PsycINFO and PubMed were reviewed if they analyzed patterns in cognitive ERPs (150ms post-stimulus) differentiating mild cognitive impairment (MCI), Alzheimer’s disease (AD), or cognitively intact elders who carry AD risk through the Apolipoprotein-E ε4 allele (ε4+) from healthy older adult controls (HC). The 100 studies meeting inclusion criteria (MCI=47; AD=47; ε4+=6) analyzed N200, P300, N400, and occasionally, later components. While there was variability across studies, patterns of reduced amplitude and delayed latency were apparent in pathological aging, consistent with AD-related brain atrophy and cognitive impairment. These effects were particularly evident in advanced disease progression (i.e., AD > MCI) and in later ERP components measured during complex tasks. Although ERP studies in intact ε4+ elders are thus far scarce, a similar pattern of delayed latency was notable, along with a contrasting pattern of increased amplitude, consistent with compensatory neural activation. This limited work suggests ERPs might be able to index early neural changes indicative of future cognitive decline in otherwise healthy elders. As ERPs are also accessible and affordable relative to other neuroimaging methods, their addition to cognitive assessment might substantively enhance early identification and characterization of neural dysfunction, allowing opportunity for earlier differential diagnosis and targeting of intervention. To evaluate this possibility there is urgent need for well-powered studies assessing late cognitive ERPs during complex tasks, particularly in healthy elders at risk for cognitive decline.


2021 ◽  
Vol 12 ◽  
Author(s):  
Caroline Fussing Bruun ◽  
Caroline Juhl Arnbjerg ◽  
Lars Vedel Kessing

Introduction: The objective of this systematic review was to investigate whether electroencephalographic parameters can serve as a tool to distinguish between melancholic depression, non-melancholic depression, and healthy controls in adults.Methods: A systematic review comprising an extensive literature search conducted in PubMed, Embase, Google Scholar, and PsycINFO in August 2020 with monthly updates until November 1st, 2020. In addition, we performed a citation search and scanned reference lists. Clinical trials that performed an EEG-based examination on an adult patient group diagnosed with melancholic unipolar depression and compared with a control group of non-melancholic unipolar depression and/or healthy controls were eligible. Risk of bias was assessed by the Strengthening of Reporting of Observational Studies in Epidemiology (STROBE) checklist.Results: A total of 24 studies, all case-control design, met the inclusion criteria and could be divided into three subgroups: Resting state studies (n = 5), sleep EEG studies (n = 10), and event-related potentials (ERP) studies (n = 9). Within each subgroup, studies were characterized by marked variability on almost all levels, preventing pooling of data, and many studies were subject to weighty methodological problems. However, the main part of the studies identified one or several EEG parameters that differentiated the groups.Conclusions: Multiple EEG modalities showed an ability to distinguish melancholic patients from non-melancholic patients and/or healthy controls. The considerable heterogeneity across studies and the frequent methodological difficulties at the individual study level were the main limitations to this work. Also, the underlying premise of shifting diagnostic paradigms may have resulted in an inhomogeneous patient population.Systematic Review Registration: Registered in the PROSPERO registry on August 8th, 2020, registration number CRD42020197472.


2019 ◽  
Vol 31 (4) ◽  
pp. 318-331 ◽  
Author(s):  
Rayane Chami ◽  
Valentina Cardi ◽  
Alexandra Lautarescu ◽  
Nuria Mallorquí-Bagué ◽  
Grainne McLoughlin

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