scholarly journals Commonalities in EEG Spectral Power Abnormalities Between Women With ADHD and Women With Bipolar Disorder During Rest and Cognitive Performance

2016 ◽  
Vol 29 (6) ◽  
pp. 856-866 ◽  
Author(s):  
Anna-Sophie Rommel ◽  
Glenn L. Kitsune ◽  
Giorgia Michelini ◽  
Georgina M. Hosang ◽  
Philip Asherson ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Cognitive Performance ◽  
Spectral Power ◽  
Eeg Spectral Power

scholarly journals Altered EEG spectral power during rest and cognitive performance: a comparison of preterm-born adolescents to adolescents with ADHD

2017 ◽  
Vol 26 (12) ◽  
pp. 1511-1522 ◽  
Author(s):  
Anna-Sophie Rommel ◽  
Sarah-Naomi James ◽  
Gráinne McLoughlin ◽  
Daniel Brandeis ◽  
Tobias Banaschewski ◽  
...  
Keyword(s):  
Cognitive Performance ◽  
Spectral Power ◽  
Eeg Spectral Power ◽  
Preterm Born

scholarly journals An Analysis of the External Validity of EEG Spectral Power in an Uncontrolled Outdoor Environment during Default and Complex Neurocognitive States

2021 ◽  
Vol 11 (3) ◽  
pp. 330
Author(s):  
Dalton J. Edwards ◽  
Logan T. Trujillo
Keyword(s):  
External Validity ◽  
Spectral Power ◽  
Brain Activity ◽  
Outdoor Environment ◽  
Oscillatory Activity ◽  
Brain State ◽  
Beta Band ◽  
Eeg Spectral Power ◽  
Eeg Power ◽  
Human Participants

Traditionally, quantitative electroencephalography (QEEG) studies collect data within controlled laboratory environments that limit the external validity of scientific conclusions. To probe these validity limits, we used a mobile EEG system to record electrophysiological signals from human participants while they were located within a controlled laboratory environment and an uncontrolled outdoor environment exhibiting several moderate background influences. Participants performed two tasks during these recordings, one engaging brain activity related to several complex cognitive functions (number sense, attention, memory, executive function) and the other engaging two default brain states. We computed EEG spectral power over three frequency bands (theta: 4–7 Hz, alpha: 8–13 Hz, low beta: 14–20 Hz) where EEG oscillatory activity is known to correlate with the neurocognitive states engaged by these tasks. Null hypothesis significance testing yielded significant EEG power effects typical of the neurocognitive states engaged by each task, but only a beta-band power difference between the two background recording environments during the default brain state. Bayesian analysis showed that the remaining environment null effects were unlikely to reflect measurement insensitivities. This overall pattern of results supports the external validity of laboratory EEG power findings for complex and default neurocognitive states engaged within moderately uncontrolled environments.

scholarly journals Slow Wave Sleep and EEG Delta Spectral Power are Associated with Cognitive Function in Parkinson’s Disease

2020 ◽  
pp. 1-12
Author(s):  
Kimberly H. Wood ◽  
Adeel A. Memon ◽  
Raima A. Memon ◽  
Allen Joop ◽  
Jennifer Pilkington ◽  
...  
Keyword(s):  
Executive Function ◽  
Cognitive Function ◽  
Cognitive Performance ◽  
Slow Wave ◽  
Effect Size ◽  
Processing Speed ◽  
Slow Wave Sleep ◽  
Spectral Power ◽  
Z Scores ◽  
Domain Scores

Background: Cognitive and sleep dysfunction are common non-motor symptoms in Parkinson’s disease (PD). Objective: Determine the relationship between slow wave sleep (SWS) and cognitive performance in PD. Methods: Thirty-two PD participants were evaluated with polysomnography and a comprehensive level II neurocognitive battery, as defined by the Movement Disorders Society Task Force for diagnosis of PD-mild cognitive impairment. Raw scores for each test were transformed into z-scores using normative data. Z-scores were averaged to obtain domain scores, and domain scores were averaged to determine the Composite Cognitive Score (CCS), the primary outcome. Participants were grouped by percent of SWS into High SWS and Low SWS groups and compared on CCS and other outcomes using 2-sided t-tests or Mann-Whitney U. Correlations of cognitive outcomes with sleep architecture and EEG spectral power were performed. Results: Participants in the High SWS group demonstrated better global cognitive function (CCS) (p = 0.01, effect size: r = 0.45). In exploratory analyses, the High SWS group showed better performance in domains of executive function (effect size: Cohen’s d = 1.05), language (d = 0.95), and processing speed (d = 1.12). Percentage of SWS was correlated with global cognition and executive function, language, and processing speed. Frontal EEG delta power during N3 was correlated with the CCS and executive function. Cognition was not correlated with subjective sleep quality. Conclusion: Increased SWS and higher delta spectral power are associated with better cognitive performance in PD. This demonstrates the significant relationship between sleep and cognitive function and suggests that interventions to improve sleep might improve cognition in individuals with PD.

The effect of Perampanel on EEG spectral power and connectivity in patients with focal epilepsy

2021 ◽  
Author(s):  
Jacopo Lanzone ◽  
Lorenzo Ricci ◽  
Mario Tombini ◽  
Marilisa Boscarino ◽  
Oriano Mecarelli ◽  
...  
Keyword(s):  
Spectral Power ◽  
Focal Epilepsy ◽  
Eeg Spectral Power

scholarly journals 0710 Sleep EEG Spectral Power Characteristics According to Age and Gender in Middle-to-Late Adulthood

SLEEP ◽  
2018 ◽  
Vol 41 (suppl_1) ◽  
pp. A264-A264
Author(s):  
J Yoon ◽  
E Lee ◽  
S Lee ◽  
K Jung ◽  
S Park ◽  
...  
Keyword(s):  
Spectral Power ◽  
Sleep Eeg ◽  
Age And Gender ◽  
Late Adulthood ◽  
Power Characteristics ◽  
Eeg Spectral Power ◽  
And Gender

scholarly journals Long-term trajectory of cognitive performance in people with bipolar disorder and controls: 6-year longitudinal study

BJPsych Open ◽  
2021 ◽  
Vol 7 (4) ◽  
Author(s):  
Timea Sparding ◽  
Erik Joas ◽  
Caitlin Clements ◽  
Carl M. Sellgren ◽  
Erik Pålsson ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Cognitive Functioning ◽  
Cognitive Performance ◽  
Repeated Measures ◽  
Cognitive Test ◽  
Healthy Controls ◽  
Cross Sectional ◽  
Time Interaction

Background Cross-sectional studies have found impaired cognitive functioning in patients with bipolar disorder, but long-term longitudinal studies are scarce. Aims The aims of this study were to examine the 6-year longitudinal course of cognitive functioning in patients with bipolar disorder and healthy controls. Subsets of patients were examined to investigate possible differences in cognitive trajectories. Method Patients with bipolar I disorder (n = 44) or bipolar II disorder (n = 28) and healthy controls (n = 59) were tested with a comprehensive cognitive test battery at baseline and retested after 6 years. We conducted repeated measures ANCOVAs with group as a between-subject factor and tested the significance of group and time interaction. Results By and large, the change in cognitive functioning between baseline and follow-up did not differ significantly between participants with bipolar disorder and healthy controls. Comparing subsets of patients, for example those with bipolar I and II disorder and those with and without manic episodes during follow-up, did not reveal subgroups more vulnerable to cognitive decline. Conclusions Cognitive performance remained stable in patients with bipolar disorder over a 6-year period and evolved similarly to healthy controls. These findings argue against the notion of a general progressive decline in cognitive functioning in bipolar disorder.

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