scholarly journals Lesions to the Fronto-Parietal Network Impact Alpha-Band Phase Synchrony and Cognitive Control

2018 ◽  
Author(s):  
Sepideh Sadaghiani ◽  
Pascasie L Dombert ◽  
Marianne Løvstad ◽  
Ingrid Funderud ◽  
Torstein R Meling ◽  
...  
Keyword(s):  
Cognitive Control ◽  
Alpha Band ◽  
Phase Synchrony

scholarly journals Electroencephalographic Phase Synchrony Index as a Biomarker of Poststroke Motor Impairment and Recovery

2020 ◽  
Vol 34 (8) ◽  
pp. 711-722 ◽  
Author(s):  
Teiji Kawano ◽  
Noriaki Hattori ◽  
Yutaka Uno ◽  
Megumi Hatakenaka ◽  
Hajime Yagura ◽  
...  
Keyword(s):  
Motor Impairment ◽  
Lesion Volume ◽  
Healthy Controls ◽  
Alpha Band ◽  
Phase Synchrony ◽  
Resonance Imaging ◽  
Theta Band ◽  
Clinical Interest ◽  
Time Of Admission ◽  
Hemispheric Infarction

Background. Motor recovery after stroke is of great clinical interest. Besides magnetic resonance imaging functional connectivity, electroencephalographic synchrony is also an available biomarker. However, the clinical relevance of electroencephalographic synchrony in hemiparesis has not been fully understood. Objective. We aimed to demonstrate the usefulness of the phase synchrony index (PSI) by showing associations between the PSI and poststroke outcome in patients with hemiparesis. Methods. This observational study included 40 participants with cortical ischemic stroke (aged 69.8 ± 13.8 years) and 22 healthy controls (aged 66.9 ± 6.5 years). Nineteen-channel electroencephalography was recorded at 36.9 ± 11.8 days poststroke. Upper extremity Fugl-Meyer scores were assessed at the time of admission/before discharge (FM-UE1/FM-UE2; 32.6 ± 12.3/121.0 ± 44.7 days poststroke). Then, correlations between the PSIs and FM-UE1 as well as impairment reduction after rehabilitation (FM-UEgain) were analyzed. Results. The interhemispheric PSI (alpha band) between the primary motor areas (M1s) was lower in patients than in controls and was selectively correlated with FM-UE1 ( P = .001). In contrast, the PSI (theta band) centered on the contralesional M1 was higher in patients than in controls and was selectively correlated with FM-UEgain ( P = .003). These correlations remained significant after adjusting for confounding factors (age, time poststroke, National Institute of Health Stroke Scale, and lesion volume). Furthermore, the latter correlation was significant in severely impaired patients (FM-UE1 ≤ 10). Conclusions. This study showed that the PSIs were selectively correlated with motor impairment and recovery. Therefore, the PSIs may be potential biomarkers in persons with a hemispheric infarction.

scholarly journals Alpha-Band Phase Synchrony Is Related to Activity in the Fronto-Parietal Adaptive Control Network

2012 ◽  
Vol 32 (41) ◽  
pp. 14305-14310 ◽  
Author(s):  
S. Sadaghiani ◽  
R. Scheeringa ◽  
K. Lehongre ◽  
B. Morillon ◽  
A.-L. Giraud ◽  
...  
Keyword(s):  
Adaptive Control ◽  
Control Network ◽  
Alpha Band ◽  
Phase Synchrony

scholarly journals The Analysis Of Phase Synchrony Of Alpha Band Waves In Detecting The Effect Of Alcohol On Eeg

2012 ◽  
Vol 04 (01) ◽  
pp. 1-7
Author(s):  
Saeed Erfanian ◽  
Mohammad Reza Shokoohi Nia ◽  
Mojtaba Shokohi Nia
Keyword(s):  
Alpha Band ◽  
Phase Synchrony

Increased long-range alpha-band phase synchrony during short-term memory retention in children

NeuroImage ◽  
2009 ◽  
Vol 47 ◽  
pp. S144
Author(s):  
U Ribary ◽  
S Doesburg ◽  
A Herdman ◽  
T Cheung ◽  
A Moiseev ◽  
...  
Keyword(s):  
Long Range ◽  
Short Term Memory ◽  
Memory Retention ◽  
Alpha Band ◽  
Phase Synchrony ◽  
Short Term ◽  
Term Memory

scholarly journals Early Versus Late Mild Cognitive Impairment: Neural Event-Related Oscillations During a Go/No Go Task

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 115-115
Author(s):  
Elizabeth Lydon ◽  
Lydia Nguyen ◽  
Shraddha Shende ◽  
Hsueh-Sheng Chiang ◽  
Raksha Mudar
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Cognitive Control ◽  
Memory Deficits ◽  
Amnestic Mild Cognitive Impairment ◽  
Neural Oscillations ◽  
Alpha Power ◽  
Alpha Band ◽  
Behavioral Differences ◽  
Neural Event

Abstract Amnestic mild cognitive impairment (aMCI) is marked by episodic memory deficits, which is used to classify individuals into early MCI (EMCI) and late MCI (LMCI). Growing evidence suggests that individuals with EMCI and LMCI differ in other cognitive functions including cognitive control, but these are less frequently studied. Using a semantic Go/NoGo task, we examined differences in cognitive control between EMCI and LMCI on behavioral (accuracy and reaction time) and neural (scalp-recorded event-related oscillations in theta and alpha band) measures. Although no behavioral differences were observed between the groups, EMCI and LMCI groups differed in patterns of neural oscillations for Go compared to NoGo trials. The EMCI group showed differences in theta power at central electrodes and alpha power at central and centro-parietal electrodes between Go and NoGo trials, while the LMCI group did not exhibit such differences. Furthermore, the LMCI group had higher theta synchronization on Go trials at central electrodes compared to the EMCI group. These findings suggest that while behavioral differences may not be observable, neural changes underlying cognitive control processes may differentiate EMCI and LMCI stages and may be useful to understand the trajectory of aMCI.

Cognitive control constrains memory attributions

2019 ◽  
Vol 42 ◽  
Author(s):  
Colleen M. Kelley ◽  
Larry L. Jacoby
Keyword(s):  
Alzheimer’S Disease ◽  
Older Adults ◽  
Alzheimer's Disease ◽  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Cognitive Control

Abstract Cognitive control constrains retrieval processing and so restricts what comes to mind as input to the attribution system. We review evidence that older adults, patients with Alzheimer's disease, and people with traumatic brain injury exert less cognitive control during retrieval, and so are susceptible to memory misattributions in the form of dramatic levels of false remembering.

Daily Experiences of Commuting Strain and Self-Control at Work and at Home

2020 ◽  
Vol 19 (3) ◽  
pp. 125-134
Author(s):  
Bettina S. Wiese ◽  
Olivia Chaillié ◽  
Ruth Noppeney ◽  
Anna M. Stertz
Keyword(s):  
Cognitive Control ◽  
Negative Emotions ◽  
Emotional Stability ◽  
Self Control ◽  
Diary Data ◽  
Daily Experiences ◽  
At Home

Abstract. The study investigates how commuting strain affects daily self-control capacities at work and at home. Irritability (i.e., increased readiness to express negative emotions when facing frustration) and concentration (i.e., a cognitive control capacity that relies on attention) were used as indicators of (impaired) self-control. Based on 5-day diary data from N = 185 train commuters, we found that on days with a strenuous ride from home to work, commuters indicated higher irritability and lower concentration capacity at work. On days with higher strain during the work-to-home ride, commuters reported to be more irritable back home. Moreover, commuters with low emotional stability turned out to be more affected by commuting strain but only if considering self-control impairment at home.

Do Young Children Modulate Their Cognitive Control?

2016 ◽  
Vol 63 (2) ◽  
pp. 117-126 ◽  
Author(s):  
Solène Ambrosi ◽  
Patrick Lemaire ◽  
Agnès Blaye
Keyword(s):  
Young Children ◽  
Cognitive Control ◽  
Inhibitory Control ◽  
Age Range ◽  
Stroop Tasks ◽  
And Task

Abstract. Dynamic, trial-by-trial modulations of inhibitory control are well documented in adults but rarely investigated in children. Here, we examined whether 5-to-7 year-old children, an age range when inhibitory control is still partially immature, achieve such modulations. Fifty three children took flanker, Simon, and Stroop tasks. Above and beyond classic congruency effects, the present results showed two crucial findings. First, we found evidence for sequential modulations of congruency effects in these young children in the three conflict tasks. Second, our results showed both task specificities and task commonalities. These findings in young children have important implications as they suggest that, to be modulated, inhibitory control does not require full maturation and that the precise pattern of trial-by-trial modulations may depend on the nature of conflict.

A Bird in the Hand Isn’t Good for Long

2018 ◽  
Vol 65 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Stefan Scherbaum ◽  
Simon Frisch ◽  
Maja Dshemuchadse
Keyword(s):  
Decision Making ◽  
Cognitive Control ◽  
The Other ◽  
Decision Task ◽  
Short Term ◽  
Additional Time ◽  
Control Processes ◽  
Folk Wisdom ◽  
Study Participants ◽  
Insight Into

Abstract. Folk wisdom tells us that additional time to make a decision helps us to refrain from the first impulse to take the bird in the hand. However, the question why the time to decide plays an important role is still unanswered. Here we distinguish two explanations, one based on a bias in value accumulation that has to be overcome with time, the other based on cognitive control processes that need time to set in. In an intertemporal decision task, we use mouse tracking to study participants’ responses to options’ values and delays which were presented sequentially. We find that the information about options’ delays does indeed lead to an immediate bias that is controlled afterwards, matching the prediction of control processes needed to counter initial impulses. Hence, by using a dynamic measure, we provide insight into the processes underlying short-term oriented choices in intertemporal decision making.

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