Article
Behavioral Sciences
Caroline E. Finn, Gloria T. Han, Adam J. Naples, Julie M. Wolf, James C. Mcpartland
Summary: This study clarifies the differences in the effects of age and cognitive ability on Electroencephalographic peak alpha frequency (PAF) between children with autism spectrum disorder and neurotypical children. The results show that PAF does not increase with age in autistic children but is positively associated with cognitive ability. These findings highlight the potential of PAF to serve as an index of distinct neural maturation trajectories in autistic children.
Article
Psychology, Biological
J. Christopher Edgar, Rose E. Franzen, Marybeth McNamee, Heather L. Green, Guannan Shen, Marissa DiPiero, Song Liu, Megan Airey, Sophia Goldin, Lisa Blaskey, Emily S. Kuschner, Mina Kim, Kimberly Konka, Timothy P. L. Roberts, Yuhan Chen
Summary: In a relaxed and awake state with the eyes closed, neural oscillations at 8-12 Hz are dominant, particularly in the parietal-occipital regions. Resting-state alpha is associated with processing speed and how networks process information. Previous research suggests that obtaining resting-state alpha measures in a dark room with the eyes open is a viable alternative to the traditional eyes-closed exam. This study further explored this alternative and found good reliability for alpha frequency in both conditions, indicating the dark room exam as a viable method in populations typically excluded from electrophysiology studies.
Article
Neurosciences
Ben-Zheng Li, Wenya Nan, Sio Hang Pun, Mang I. Vai, Agostinho Rosa, Feng Wan
Summary: This study successfully up-regulated the individual alpha frequency (IAF) of healthy young adults through short-term neurofeedback training using haptic feedback. It was found that IAF was correlated with enhanced cognitive performance in mental rotation and n-back tests. This study demonstrates the feasibility of self-regulating IAF for cognition enhancement and potential therapeutic benefits for cognitive-impaired patients.
Article
Neurosciences
Florian Javelle, Andreas Loew, Wilhelm Bloch, Thomas Hosang, Thomas Jacobsen, Sheri L. Johnson, Alexander Schenk, Philipp Zimmer
Summary: The contribution of genetic polymorphisms, such as 5-HTTLPR, STin2, and MAO-A, to individual differences in personality traits and impulsivity has been widely explored. This study aims to examine the relationship between serotonergic neurotransmission polymorphisms, cortical activity features, and different forms of impulsivity. The results showed that the 5-HTTLPR polymorphism and the individual alpha peak frequency (iAPF) significantly predicted emotion-related impulsivity, suggesting the importance of these genetic and neurophysiological factors in understanding impulsivity.
MOLECULAR NEUROBIOLOGY
(2022)
Article
Psychology, Developmental
Guannan Shen, Heather L. Green, Rose E. Franzen, Jeffrey I. Berman, Marissa Dipiero, Theresa G. Mowad, Luke Bloy, Song Liu, Megan Airey, Sophia Goldin, Matthew Ku, Emma McBride, Lisa Blaskey, Emily S. Kuschner, Mina Kim, Kimberly Konka, Timothy P. L. Roberts, J. Christopher Edgar
Summary: Resting-state alpha brain rhythms are different in individuals with autism spectrum disorder (ASD) compared to typically developing (TD) individuals. This study used magnetoencephalography (MEG) to collect resting-state data from 47 TD males and 45 ASD males aged 6.0 to 9.3 years old. The results showed that individuals with ASD had higher peak frequency of resting-state alpha activity (PAF) compared to TD individuals, and the differences in alpha power were linked to the shift of PAF in ASD. Additionally, a higher PAF was associated with better cognitive performance in TD individuals but not in ASD individuals.
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
(2023)
Article
Psychology, Biological
Anna J. Finley, Douglas J. Angus, Carien M. van Reekum, Richard J. Davidson, Stacey M. Schaefer
Summary: The ratio of fronto-central theta to beta oscillations is negatively correlated with attentional control, reinforcement learning, executive function, and age. Although theta-beta ratios have been found to decrease with age in adolescents and young adults, theta has been found to increase with age in older adults. Age-related decrease in individual alpha peak frequency and flattening of the aperiodic component may artifactually inflate the association between theta-beta ratio and age. A partially preregistered analysis was conducted to examine the cross-sectional associations between age and resting canonical fronto-central theta-beta ratio. The results show that age is negatively associated with theta-beta ratios, individual peak alpha frequencies, and the aperiodic exponent.
Article
Psychology, Developmental
Julie Freschl, Lina Al Azizi, Lilyann Balboa, Zsuzsa Kaldy, Erik Blaser
Summary: This study conducted a comprehensive review of resting-state occipital peak alpha frequency (PAF) from birth to 18 years of age. The findings revealed a rapid increase in PAF during early childhood, followed by stabilization during adolescence. The study also confirmed the association between PAF and visual temporal resolution.
DEVELOPMENTAL COGNITIVE NEUROSCIENCE
(2022)
Article
Geriatrics & Gerontology
Delphine Puttaert, Vincent Wens, Patrick Fery, Antonin Rovai, Nicola Trotta, Nicolas Coquelet, Sandra De Breucker, Niloufar Sadeghi, Tim Coolen, Serge Goldman, Philippe Peigneux, Jean-Christophe Bier, Xavier De Tiege
Summary: The study demonstrates a link between alpha brain activity and alterations in episodic memory, showing that a slowing down of alpha rhythmic activity is associated with impairments in the ability to learn and store new information for a short-term period. This suggests that a decreased alpha peak frequency may be considered an electrophysiological correlate of short-term episodic memory dysfunction in pathological aging.
FRONTIERS IN AGING NEUROSCIENCE
(2021)
Review
Neurosciences
Aurimas Mockevicius, Kristina Sveistyte, Inga Griskova-Bulanova
Summary: In recent years, the concept of individualized measures of electroencephalographic (EEG) activity has emerged. Peak gamma frequency (IGF) is rarely used as a primary measure of interest, so little is known about its nature and functional significance. IGFs seem to be related to various endogenous and exogenous factors, pointing to differences in underlying mechanisms. However, the wide range of IGFs could be due to the variability of methods used, which requires further optimization for accurate extraction.
Article
Chemistry, Multidisciplinary
Shufeng Zhang, Xuelei Feng, Yong Shen
Summary: This study explored the potential use of EEG for measuring presence and found EEG indices that are correlated with subjective presence levels.
APPLIED SCIENCES-BASEL
(2022)
Article
Optics
Houjie Ma, Xin Wei, Hui Zhao, Minglong Zhang, Haiqiong Zhou, Siqi Zhu, Hao Yin, Zhen Li, Zhenqiang Chen, Yu Shen, Nan Zong, Shenjin Zhang, Shibo Dai
Summary: In this paper, we demonstrate the first nanosecond pulsed single longitudinal mode (SLM) intracavity-pumped diamond Raman laser. Through the use of spatial hole burning free gain mechanism and incorporating an etalon in the cavity, stable SLM operation and suppressed spectral linewidth are achieved.
Article
Neurosciences
Caroline C. Strang, Alison Harris, Eric J. Moody, Catherine L. Reed
Summary: This study found that higher autism-spectrum traits in neurotypical individuals were associated with a slowing of the peak oscillatory frequency of the mu rhythm, which was not likely explained by volume conduction of the occipitoparietal peak alpha frequency associated with attention.
FRONTIERS IN NEUROSCIENCE
(2022)
Article
Physics, Applied
Stefan Meinecke, Kathy Luedge
Summary: In this study, using a delay-differential equation model, three distinct instabilities that limit the maximum achievable pump power for passively mode-locked semiconductor disk lasers were detected, understood, and classified, and linked to characteristic positive-net-gain windows. A simple analytic approximation was derived to quantitatively describe the stability boundary. The results enable the prediction of optimal laser-cavity configurations with respect to positive-net-gain instabilities and are of great relevance for the future development of passively mode-locked semiconductor disk lasers.
PHYSICAL REVIEW APPLIED
(2022)
Article
Psychology, Developmental
Dillan Cellier, Justin Riddle, Isaac Petersen, Kai Hwang
Summary: This study investigated the development of theta and alpha oscillations from early childhood to adulthood, finding that theta oscillations dominate in posterior electrodes in early childhood while the peak frequency of alpha oscillations increases between ages 7 and 24. Additionally, there was a topographical transition of theta oscillations from dominance in posterior electrodes in early childhood to anterior electrodes in adulthood.
DEVELOPMENTAL COGNITIVE NEUROSCIENCE
(2021)
Article
Construction & Building Technology
Ying Sun, Karthik Panchabikesan, Fariborz Haghighat, Jianing (Tom) Luo, Alain Moreau, Miguel Robichaud
Summary: This study developed two advanced controllers to achieve peak shifting and heating cost-saving by controlling electrically heated floor and heat extraction system. The results showed that the developed controllers effectively shift energy consumption from the peak period and decrease heating cost by around 33%.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Neurosciences
Elena Rodriguez-Martinez, Antonio Arjona Valladares, Jaime Gomez-Gonzalez, Jose A. Diaz-Sanchez, Carlos M. Gomez
Summary: Impairment of executive functions, particularly attention and working memory, is proposed as a key feature of ADHD. This study found that ADHD subjects exhibited reduced N2pc and Pd components during a DMTS test, indicating potential difficulties in attentional selection and distractor suppression. Despite using similar neural resources as controls, ADHD children showed higher error rates and longer reaction times, suggesting challenges in suppressing distractors.
NEUROSCIENCE RESEARCH
(2021)
Article
Physiology
Manuel Munoz-Caracuel, Vanesa Munoz, Francisco J. Ruiz-Martinez, Dalila Di Domenico, Sabrina Brigadoi, Carlos M. Gomez
Summary: The study examined the effects of increasing auditory stimulation intensity on various physiological responses, finding that ERPs, fNIRS, and peripheral responses increased in activity with higher intensity. However, under high-intensity auditory stimulation conditions, peripheral signals and fNIRS responses decreased. Principal components analysis suggested independent sources of variance for the recorded signals, possibly related to activation of the sympathetic nervous system.
EXPERIMENTAL PHYSIOLOGY
(2021)
Article
Physics, Multidisciplinary
Francisco J. Ruiz-Martinez, Antonio Arjona, Carlos M. Gomez
Summary: The study demonstrates the presence of MMN to deviant trials in complex auditory stimuli sequences, indicating a possible relationship to predictive coding. The appearance of an SPN during intertrial intervals, with reduced amplitude in response to deviant trials, supports the predictive coding framework.
Article
Neurosciences
Carlos M. Gomez, Brenda Y. Angulo-Ruiz, Vanesa Munoz, Elena Rodriguez-Martinez
Summary: The research aims to define the statistical characteristics of brain oscillations in human EEG bursts during resting state, analyzing amplitude and duration properties, frequency content, and the presence of a fixed threshold. Results suggest the presence of amplitude modulated continuous oscillations positively correlated with amplitude and negatively correlated with the time derivative of the amplitude envelope. The macroscopic oscillatory network behavior is less pronounced in the low-frequency range.
COGNITIVE NEURODYNAMICS
(2022)
Article
Neurosciences
Francisco J. Ruiz-Martinez, Manuel Morales-Ortiz, Carlos M. Gomez
Summary: The study analyzed the predictive coding ability of the human brain in extracting environmental patterns and reformulating previous expectations through the late N1 and PINV components. Results showed higher amplitude for more complex conditions and deviant trials, suggesting continuous updating of trial categorization.
JOURNAL OF NEUROPHYSIOLOGY
(2022)
Article
Psychology, Experimental
Catarina Barriga-Paulino, Milene Guerreiro, Luis Faisca, Alexandra Reis
Summary: The effects of emotional valence on early word recognition were examined in a lexical decision task. Positive words were recognized faster, while negative words were recognized slower compared to neutral words. The processing advantage of different valence categories was modulated by word frequency and arousal.
Article
Physiology
Vanesa Munoz, Jose A. Diaz-Sanchez, Manuel Munoz-Caracuel, Carlos M. Gomez
Summary: The study aimed to analyze the systemic response to auditory stimulation using various physiological measures. The results showed differentiated responses to different auditory intensities, including a decrease in peripheral signals and a decrease in oxygenation at the head level. However, other measures showed no significant differences between intensities. The study highlights the complex physiological response to high-intensity auditory stimuli.
PHYSIOLOGICAL REPORTS
(2022)
Article
Neurosciences
Brenda Y. Angulo-Ruiz, Vanesa Munoz, Elena Rodriguez-Martinez, Celia Cabello-Navarro, Carlos M. Gomez
Summary: This study aimed to investigate neural mechanisms underlying ADHD in comparison to healthy children through analyzing the complexity and variability of EEG brain signals. The results showed that ADHD children exhibit increased EEG variability and reduced complexity compared to controls.
COGNITIVE NEURODYNAMICS
(2023)
Article
Neurosciences
Antonio Arjona, Brenda Y. Angulo-Ruiz, Elena I. Rodriguez-Martinez, Celia Cabello-Navarro, Carlos M. Gomez
Summary: The present study analyzed the time-frequency changes in Event-Related Spectral perturbations (ERSP) in ADHD children and adolescents compared to a normodevelopment (ND) sample. The results showed that ADHD subjects had higher Reaction Time (RT), Standard Deviation of RT (Std of RT), and reduced percentage of correct responses. ADHD children exhibited reduced Event-Related Synchronization (ERS) in the Theta range during the encoding phase and reduced Alpha ERS during the late period of the maintenance phase. Behavioral data, early Theta, and late Alpha ERS successfully classified over 70% of ADHD and ND subjects using linear discriminant analysis.
NEUROSCIENCE LETTERS
(2023)
Article
Neurosciences
Carlos M. Gomez, Vanesa Munoz, Elena I. Rodriguez-Martinez, Antonio Arjona, Catarina I. Barriga-Paulino, Santiago Pelegrina
Summary: The developmental trajectories of brain oscillations during the encoding and maintenance phases of a Working Memory (WM) task were examined in a group of 239 subjects aged 6-29 years. The results showed that there were various transient and sustained bursts of oscillatory activity across different frequency ranges during the encoding and maintenance phases. The patterns of oscillatory activity were found to be age-dependent, with different frequency bands showing different patterns in different age groups.
BRAIN AND COGNITION
(2023)
Article
Clinical Neurology
Brenda Y. Angulo-Ruiz, Francisco J. Ruiz-Martinez, Elena I. Rodriguez-Martinez, Anca Ionescu, David Saldana, Carlos M. Gomez
Summary: This study examines the EEG brain activity of children diagnosed with ASD and children with normal development. The analysis shows increased PSD fast frequency bands, higher variability, and lower complexity in children with ASD compared to typically developed children. This suggests less adaptive neural networks with less optimal responses in ASD children.
Article
Neurosciences
Elena I. Rodriguez-Martinez, Raquel Munoz-Pradas, Antonio Arjona, Brenda Y. Angulo-Ruiz, Vanesa Munoz, Carlos M. Gomez
Summary: This report explores the relationship between working memory and intelligence measurements in children and adolescents with normal development and diagnosed attention deficit hyperactivity disorder. The results indicate significant correlations between different components of working memory and various aspects of intelligence in both groups. The findings suggest that working memory may play a more crucial role in cognitive processing in subjects with attention deficit hyperactivity disorder.
Article
Anatomy & Morphology
Vanesa Munoz, Manuel Munoz-Caracuel, Brenda Y. Angulo-Ruiz, Carlos M. Gomez
Summary: This study explores the relationship between intensity-dependent amplitude changes (IDAP) and neurovascular coupling using functional near-infrared spectroscopy (fNIRS). The results show correlations between auditory intensity and ERP components N1, P2, and N1-P2 peak-to-peak amplitude, as well as oxyhemoglobin and deoxyhemoglobin concentrations. These findings support the potential of fNIRS as a complementary technique to ERPs, enhancing our understanding of its application in auditory paradigms.
BRAIN STRUCTURE & FUNCTION
(2023)
