Psychopathy and Resting State EEG Theta/Beta Oscillations in Adolescent Offenders

2022 ◽  
Author(s):  
Abby P. Clark ◽  
Andrew P. Bontemps ◽  
Rick A. Houser ◽  
Randall T. Salekin
Keyword(s):  
Resting State ◽  
Adolescent Offenders ◽  
Beta Oscillations

scholarly journals Decreased MEG beta oscillations in HIV-infected older adults during the resting state

2013 ◽  
Vol 19 (6) ◽  
pp. 586-594 ◽  
Author(s):  
Katherine M. Becker ◽  
Elizabeth Heinrichs-Graham ◽  
Howard S. Fox ◽  
Kevin R. Robertson ◽  
Uriel Sandkovsky ◽  
...  
Keyword(s):  
Older Adults ◽  
Resting State ◽  
Beta Oscillations

scholarly journals Significant Increases in EEG Anterior-Posterior Alpha and Beta Powers By Transcranial Photobiomodulation (tPBM) in Healthy Humans With Exclusion of Thermal Effects

2021 ◽  
Author(s):  
Hashini Wanniarachchi ◽  
Xinlong Wang ◽  
Anqi Wu ◽  
F. Gonzalez-Lima ◽  
Hanli Liu
Keyword(s):  
Resting State ◽  
Thermal Effects ◽  
Thermal Stimulation ◽  
Human Cognition ◽  
Beta Oscillations ◽  
Frequency Bands ◽  
Healthy Humans ◽  
Eyes Closed ◽  
Frontoparietal Network ◽  
Anterior Posterior

Abstract Transcranial photobiomodulation (tPBM) of the prefrontal cortex can improve human cognition and increase electroencephalogram (EEG) alpha and beta powers, but it was unclear whether tPBM-induced heat would influence EEG oscillation powers. This study aimed to prove that tPBM-induced increases in anterior-posterior EEG powers at alpha and beta bands would be significant after removal of tPBM-associated thermal effects. We performed both sham-controlled tPBM and sham-controlled thermal stimulation (thermo_stim) experiments under the eyes-closed resting state with concurrent recordings of 64-channel EEG before, during, and after 8-min tPBM at 1064-nm wavelength and thermo_stim with temperature from 33 to 41 °C, respectively, from healthy humans (n=46 for tPBM; n=14 for thermo_stim). Sham-subtracted topographies of EEG powers at five frequency bands were averaged at the group level during and post both stimulations. Two-sample t-tests with FDR correction and effect size were calculated for comparing tPBM and thermal effects at all five frequency bands. Right-frontal tPBM induced significant increases in EEG anterior-posterior alpha and beta powers under the eyes-closed conditions, consistent with the results previously reported in the eyes-open tPBM experiments. In contrast, right-frontal thermal stimulation under the eyes-closed resting state resulted in opposite effects on EEG power patterns with respect to those by tPBM. tPBM-induced enhancement in alpha and beta oscillations occurred during the 8-min intervention after exclusion of thermal effects. The ability of tPBM to synchronize alpha and beta oscillations in the anterior-posterior regions may be linked to the enhancement of frontoparietal network and the improvement of human cognition.

scholarly journals Long-Range Temporal Correlations in Resting State Beta Oscillations are Reduced in Schizophrenia

2019 ◽  
Vol 10 ◽  
Author(s):  
James K. Moran ◽  
Georgios Michail ◽  
Andreas Heinz ◽  
Julian Keil ◽  
Daniel Senkowski
Keyword(s):  
Long Range ◽  
Resting State ◽  
Beta Oscillations ◽  
Temporal Correlations

Electron Probe Analysis of Muscle

1982 ◽  
Vol 40 ◽  
pp. 398-401
Author(s):  
A. V. Somlyo ◽  
H. Shuman ◽  
A. P. Somlyo
Keyword(s):  
Skeletal Muscle ◽  
Smooth Muscle ◽  
Sarcoplasmic Reticulum ◽  
Resting State ◽  
Binding Sites ◽  
Electron Probe ◽  
Frog Skeletal Muscle ◽  
Electron Probe Analysis ◽  
Probe Analysis

Electron probe analysis of frozen dried cryosections of frog skeletal muscle, rabbit vascular smooth muscle and of isolated, hyperpermeab1 e rabbit cardiac myocytes has been used to determine the composition of the cytoplasm and organelles in the resting state as well as during contraction. The concentration of elements within the organelles reflects the permeabilities of the organelle membranes to the cytoplasmic ions as well as binding sites. The measurements of [Ca] in the sarcoplasmic reticulum (SR) and mitochondria at rest and during contraction, have direct bearing on their role as release and/or storage sites for Ca in situ.

Inter-Method Reliability of Pulse Volume Related Measures Derived Using Finger-Photoplethysmography

2018 ◽  
Vol 32 (4) ◽  
pp. 182-190 ◽  
Author(s):  
Kenta Matsumura ◽  
Koichi Shimizu ◽  
Peter Rolfe ◽  
Masanori Kakimoto ◽  
Takehiro Yamakoshi
Keyword(s):  
Light Intensity ◽  
Adverse Effects ◽  
Light Source ◽  
Direct Current ◽  
Resting State ◽  
Current Component ◽  
Psychophysiological Measures ◽  
Pulse Volume ◽  
Optical Paths ◽  
Sensor Positions

Abstract. Pulse volume (PV) and its related measures, such as modified normalized pulse volume (mNPV), direct-current component (DC), and pulse rate (PR), derived from the finger-photoplethysmogram (FPPG), are useful psychophysiological measures. Although considerable uncertainties exist in finger-photoplethysmography, little is known about the extent of the adverse effects on the measures. In this study, we therefore examined the inter-method reliability of each index across sensor positions and light intensities, which are major disturbance factors of FPPG. From the tips of the index fingers of 12 participants in a resting state, three simultaneous FPPGs having overlapping optical paths were recorded, with their light intensity being changed in three steps. The analysis revealed that the minimum values of three coefficients of Cronbach’s α for ln PV, ln mNPV, ln DC, and PR across positions were .948, .850, .922, and 1.000, respectively, and that those across intensities were .774, .985, .485, and .998, respectively. These findings suggest that ln mNPV and PR can be used for psychophysiological studies irrespective of minor differences in sensor attachment positions and light source intensity, whereas and ln DC can also be used for such studies but under the condition of light intensity being fixed.

Physical Fitness and Resting EEG in Children With Attention Deficit Hyperactivity Disorder

2015 ◽  
Vol 29 (1) ◽  
pp. 26-32 ◽  
Author(s):  
Ching-Wen Huang ◽  
Chung-Ju Huang ◽  
Chiao-Ling Hung ◽  
Chia-Hao Shih ◽  
Tsung-Min Hung
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Physical Fitness ◽  
Attention Deficit ◽  
Resting State ◽  
Self Control ◽  
Children With Adhd ◽  
Hyperactivity Disorder ◽  
Higher Power ◽  
Eyes Open ◽  
The Relationship

Children with attention deficit hyperactivity disorder (ADHD) are characterized by a deviant pattern of brain oscillations during resting state, particularly elevated theta power and increased theta/alpha and theta/beta ratios that are related to cognitive functioning. Physical fitness has been found beneficial to cognitive performance in a wide age population. The purpose of the present study was to investigate the relationship between physical fitness and resting-state electroencephalographic (EEG) oscillations in children with ADHD. EEG was recorded during eyes-open resting for 28 children (23 boys and 5 girls, 8.66 ± 1.10 years) with ADHD, and a battery of physical fitness assessments including flexibility, muscular endurance, power, and agility tests were administered. The results indicated that ADHD children with higher power fitness exhibited a smaller theta/alpha ratio than those with lower power fitness. These findings suggest that power fitness may be associated with improved attentional self-control in children with ADHD.

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