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https://www.readbyqxmd.com/read/29291475/brain-arousal-regulation-in-adults-with-attention-deficit-hyperactivity-disorder-adhd
#1
Maria Strauß, Christine Ulke, Madlen Paucke, Jue Huang, Nicole Mauche, Christian Sander, Tetyana Stark, Ulrich Hegerl
The main aim of the current study was to test the hypothesis that adult patients with attention-deficit/hyperactivity disorder (ADHD) have less stable brain arousal regulation than healthy controls. We objectively assessed brain arousal regulation using the Vigilance Algorithm Leipzig (VIGALL 2.1) to analyze 15-min resting EEG data of thirty-three ADHD patients and thirty-five matched controls. Based on automatically classified 1-s segments we computed mean EEG-vigilance (indexing arousal level) and arousal stability score (indexing arousal regulation)...
December 18, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29261133/eeg-dynamics-of-a-go-nogo-task-in-children-with-adhd
#2
Simon Baijot, Carlos Cevallos, David Zarka, Axelle Leroy, Hichem Slama, Cecile Colin, Nicolas Deconinck, Bernard Dan, Guy Cheron
BACKGROUND: Studies investigating event-related potential (ERP) evoked in a Cue-Go/NoGo paradigm have shown lower frontal N1, N2 and central P3 in children with attention-deficit/hyperactivity disorder (ADHD) compared to typically developing children (TDC). However, the electroencephalographic (EEG) dynamics underlying these ERPs remain largely unexplored in ADHD. METHODS: We investigate the event-related spectral perturbation and inter-trial coherence linked to the ERP triggered by visual Cue-Go/NoGo stimuli, in 14 children (7 ADHD and 7 TDC) aged 8 to 12 years...
December 20, 2017: Brain Sciences
https://www.readbyqxmd.com/read/29258410/different-cortical-source-activation-patterns-in-children-with-attention-deficit-hyperactivity-disorder-during-a-time-reproduction-task
#3
Shiva Khoshnoud, Mousa Shamsi, Mohammad Ali Nazari, Scott Makeig
Several neurocognitive studies have indicated that children with attention-deficit/hyperactivity disorder (ADHD) exhibit cognitive deficits in perceptual timing functions; however, only a few electroencephalographic studies have investigated their time reproduction abilities. In the present research, 15 children with ADHD were studied along with 19 age-matched control subjects (aged 7-11 years) as they attempted to reproduce shorter (1000 ms) and longer (2200 ms) time intervals. Trial-mean event-related potential (ERP) and event-related spectral perturbation measures were used to compare the electroencephalography (EEG) source-level activity patterns of the ADHD and control subjects during the time-encoding and reproduction phases...
December 19, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/29216607/frequency-of-risk-factors-and-coexisting-abnormalities-in-a-population-of-egyptian-children-with-autism-spectrum-disorder
#4
Nagwa Abdel Meguid, Neveen Hassan Nashaat, Heba S Hashem, Mai M Khalil
BACKGROUND: Many risk factors interact together during the critical period of development and govern the future phenotype of autism spectrum disorder (ASD). Furthermore, co-occurring abnormalities among individuals with ASD vary a lot so as their abilities. AIM OF WORK: To investigate possible risk factors and to determine the prevalence of coexisting abnormalities in a sample of Egyptian ASD children and their influence on the severity and their communication performance...
December 1, 2017: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/29215804/cognitive-function-and-neuropsychological-comorbidities-in-children-with-newly-diagnosed-idiopathic-epilepsy
#5
Seung Yun Lee, Jang Ho Park, Sin Jae Park, Yangho Kim, Kyung Yeon Lee
BACKGROUND: In this study, we aimed to identify cognitive function and neuropsychological comorbidities in children with newly diagnosed idiopathic epilepsy. METHODS: We retrospectively reviewed the records of 97 antiepileptic drug-naïve children (9.7 ± 2.9 years; 54 males and 43 females) with newly diagnosed idiopathic epilepsy, all of whom underwent a neuropsychological battery. The battery consisted of the Korean Wechsler Intelligence Scale, Attention Deficit Hyperactivity Disorder (ADHD) Rating Scale, ADHD Diagnostic System, Children's Depression Inventory, and State-Trait Anxiety Inventory for Children...
January 15, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29172003/functional-brain-dynamic-analysis-of-adhd-and-control-children-using-nonlinear-dynamical-features-of-eeg-signals
#6
Shiva Khoshnoud, Mohammad Ali Nazari, Mousa Shamsi
Attention deficit hyperactivity disorder is a neurodevelopmental condition associated with varying levels of hyperactivity, inattention, and impulsivity. This study investigates brain function in children with attention deficit hyperactivity disorder using measures of nonlinear dynamics in EEG signals during rest. During eyes-closed resting, 19 channel EEG signals were recorded from 12 ADHD and 12 normal age-matched children. We used the multifractal singularity spectrum, the largest Lyapunov exponent, and approximate entropy to quantify the chaotic nonlinear dynamics of these EEG signals...
November 21, 2017: Journal of Integrative Neuroscience
https://www.readbyqxmd.com/read/29161891/the-significance-of-impulsive-error-in-children-with-adhd
#7
Yu-Chi Liao, Nai-Wen Guo, Shin-Jaw Chen, Hsing-Fang Tsai, Jhih-Hong Fang, Jia-Jin Chen, Bei-Yi Su
A deficit of inhibition ability is a neuropsychological problem in children with attention deficit hyperactivity disorder (ADHD). We investigated whether in children who made impulsive error (IE), less error-related negativity (ERN) would correlate with poorer executive attention functions (EAFs). Ninety children (49 with ADHD and 41 without ADHD) were investigated by a 4-minute simple reaction time task and simultaneous electroencephalogram. When they made IE, the ERN in response-locked event-related potential (ERP) was defined as error awareness...
November 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29158877/functional-brain-connectivity-differences-between-different-adhd-presentations-impaired-functional-segregation-in-adhd-combined-presentation-but-not-in-adhd-inattentive-presentation
#8
Amir Hossein Ghaderi, Mohammad Ali Nazari, Hassan Shahrokhi, Amir Hossein Darooneh
Introduction: Contrary to Diagnostic and Statistical Manual of Mental Disorders (DSM-5), fifth edition, some studies indicate that ADHD-inattentive presentation (ADHD-I) is a distinct diagnostic disorder and not an ADHD presentation. Methods: In this study, 12 ADHD-combined presentation (ADHD-C), 10 ADHD-I, and 13 controls were enrolled and their resting state EEG recorded. Following this, a graph theoretical analysis was performed and functional integration and segregation of brain network was calculated...
July 2017: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/29110563/increased-beta-activity-links-to-impaired-emotional-control-in-adhd-adults-with-high-iq
#9
Hui Li, Qihua Zhao, Fang Huang, Qingjiu Cao, Qiujin Qian, Stuart J Johnstone, Yufeng Wang, Changming Wang, Li Sun
OBJECTIVE: The present study investigated the neuropathology of everyday-life executive function (EF) deficits in adults with ADHD with high IQ. METHOD: Forty adults with ADHD with an IQ ≥ 120 and 40 controls were recruited. Ecological EFs were measured, and eyes-closed Electroencephalograph (EEG) signals were recorded during a resting-state condition; EEG power and correlations with impaired EFs were analyzed. RESULTS: Compared with controls, the ADHD group showed higher scores on all clusters of EF...
November 1, 2017: Journal of Attention Disorders
https://www.readbyqxmd.com/read/29059898/personalized-features-for-attention-detection-in-children-with-attention-deficit-hyperactivity-disorder
#10
Fatemeh Fahimi, Cuntai Guan, Wooi Boon Goh, Kai Keng Ang, Choon Guan Lim, Tih Shih Lee
Measuring attention from electroencephalogram (EEG) has found applications in the treatment of Attention Deficit Hyperactivity Disorder (ADHD). It is of great interest to understand what features in EEG are most representative of attention. Intensive research has been done in the past and it has been proven that frequency band powers and their ratios are effective features in detecting attention. However, there are still unanswered questions, like, what features in EEG are most discriminative between attentive and non-attentive states? Are these features common among all subjects or are they subject-specific and must be optimized for each subject? Using Mutual Information (MI) to perform subject-specific feature selection on a large data set including 120 ADHD children, we found that besides theta beta ratio (TBR) which is commonly used in attention detection and neurofeedback, the relative beta power and theta/(alpha+beta) (TBAR) are also equally significant and informative for attention detection...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29057854/frontal-theta-beta-ratio-changes-during-tova-in-egyptian-adhd-children
#11
Islam F Halawa, Basma B El Sayed, Omnia R Amin, Nagwa A Meguid, Ann A Abdel Kader
OBJECTIVE: To spot the frontal theta/beta ratio alterations during Tests of Variance of Attention (TOVA) in Egyptian attention deficit hyperactivity disorder (ADHD) children. METHODS: This is a cross sectional study performed in Clinical Neurophysiology Unit, Cairo University, Egypt. It included 2 groups, each of 52 children (one of them with ADHD and the other were normal control). EEG was recorded for every subject during normal relaxing circumstance with eyes opened as well as during TOVA...
October 2017: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/29036764/hippotherapy-and-neurofeedback-training-effect-on-the-brain-function-and-serum-brain-derived-neurotrophic-factor-level-changes-in-children-with-attention-deficit-or-and-hyperactivity-disorder
#12
Namju Lee, Sok Park, Jongkyu Kim
PURPOSE: The purpose of this study was to investigate the effect of hippotherapy and electroencephalography (EEG) neurofeedback on brain function and blood brain-derived neurotrophic factor (BDNF) level in children with attention-deficit or/and hyperactivity disorder (ADHD). METHODS: Sixteen children with ADHD participated in this study and were randomly divided into 2 groups, a 1-time hippotherapy group (W1G, n = 8) and a 2-time hippotherapy group (W2G, n = 8)...
September 30, 2017: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/29028500/neural-network-topology-in-adhd-evidence-for-maturational-delay-and-default-mode-network-alterations
#13
T W P Janssen, A Hillebrand, A Gouw, K Geladé, R Van Mourik, A Maras, J Oosterlaan
OBJECTIVE: Attention-deficit/hyperactivity disorder (ADHD) has been associated with widespread brain abnormalities in white and grey matter, affecting not only local, but global functional networks as well. In this study, we explored these functional networks using source-reconstructed electroencephalography in ADHD and typically developing (TD) children. We expected evidence for maturational delay, with underlying abnormalities in the default mode network. METHODS: Electroencephalograms were recorded in ADHD (n=42) and TD (n=43) during rest, and functional connectivity (phase lag index) and graph (minimum spanning tree) parameters were derived...
September 23, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28925800/investigation-of-attention-deficit-hyperactivity-disorder-adhd-sub-types-in-children-via-eeg-frequency-domain-analysis
#14
Ramazan Aldemir, Esra Demirci, Huseyin Per, Mehmet Canpolat, Sevgi Özmen, Mahmut Tokmakçı
This study aims to investigate the frequency domain effects and changes in Electroencephalographic (EEG) signals in children aged 7-12 years old who were diagnosed with Attention Deficit and Hyperactivity Disorder (ADHD) and which labelled subtypes of ADHD.The study's sample consisted of 20 healthy children and 20 ADHD children as control group. Of the 20 participants who were diagnosed with ADHD, 10 were classified as ADHD-I (inattentive subtype ADHD) and the other 10 were classified as ADHD-C (combined subtype ADHD)...
September 19, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28924202/coupling-and-dynamics-of-cortical-and-autonomic-signals-are-linked-to-central-inhibition-during-the-wake-sleep-transition
#15
Christine Ulke, Jue Huang, Justus T C Schwabedal, Galina Surova, Roland Mergl, Tilman Hensch
Maintaining temporal coordination across physiological systems is crucial at the wake-sleep transition. As shown in recent studies, the degree of coordination between brain and autonomic arousal influences attention, which highlights a previously unrecognised point of potential failure in the attention system. To investigate how cortical and autonomic dynamics are linked to the attentive process we analysed electroencephalogram, electrocardiogram and skin conductance data of 39 healthy adults recorded during a 2-h resting-state oddball experiment...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28921526/parsing-heterogeneity-in-attention-deficit-hyperactivity-disorder-using-eeg-based-subgroups
#16
Sandra K Loo, James J McGough, James T McCracken, Susan L Smalley
BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is a heterogeneous condition for which multiple efforts to characterize brain state differences are underway. The objective of this study was to identify distinct subgroups of resting electroencephalography (EEG) profiles among children with and without ADHD and subsequently provide extensive clinical characterization of the subgroups. METHODS: Latent class analysis was used with resting state EEG recorded from a large sample of 781 children with and without ADHD (N = 620 ADHD, N = 161 Control), aged 6-18 years old...
September 18, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28860979/childhood-trauma-associated-with-enhanced-high-frequency-band-powers-and-induced-subjective-inattention-of-adults
#17
Seung-Hwan Lee, Yeonsoo Park, Min Jin Jin, Yeon Jeong Lee, Sang Woo Hahn
Childhood trauma can lead to various psychological and cognitive symptoms. It has been demonstrated that high frequency electroencephalogram (EEG) powers could be closely correlated with inattention. In this study, we explored the relationship between high frequency EEG powers, inattention, symptoms of adult attention deficit hyperactivity disorder (ADHD), and childhood traumatic experiences. A total of 157 healthy Korean adult volunteers were included and divided into two groups using the Childhood Trauma Questionnaire (CTQ) score...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28830028/increased-rates-of-intermittent-rhythmic-delta-and-theta-activity-in-the-electroencephalographies-of-adult-patients-with-attention-deficit-hyperactivity-disorder
#18
Dominique Endres, Simon Maier, Bernd Feige, Nora Bel Mokhtar, Kathrin Nickel, Peter Goll, Simon A Meyer, Swantje Matthies, Dieter Ebert, Alexandra Philipsen, Evgeniy Perlov, Ludger Tebartz van Elst
INTRODUCTION: Adult attention-deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder. In subgroups of patients with a (para)epileptic pathomechanism, this might be due to intermittent rhythmic delta or theta activity (IRDA/IRTA). PARTICIPANTS AND METHODS: Using a fully data-driven analysis, we compared the IRDA/IRTA rates in the resting electroencephalography (EEG) results of 97 adult patients with ADHD and 30 control subjects. The IRDA/IRTA rates before hyperventilation (HV) and for HV difference (difference between IRDA/IRTA rate after and before HV) were compared between groups using a linear model...
August 19, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28803030/neurofeedback-sham-neurofeedback-and-cognitive-behavioural-group-therapy-in-adults-with-attention-deficit-hyperactivity-disorder-a-triple-blind-randomised-controlled-trial
#19
Michael Schönenberg, Eva Wiedemann, Alexander Schneidt, Jonathan Scheeff, Alexander Logemann, Philipp M Keune, Martin Hautzinger
BACKGROUND: Many studies suggest that electroencephalographic (EEG) neurofeedback might be beneficial in the treatment of attention-deficit hyperactivity disorder (ADHD). However, numbers of well controlled studies are low and neurofeedback techniques are regarded as highly controversial. The present trial examined the efficacy (compared with sham neurofeedback) and efficiency (compared with meta-cognitive therapy) of a standard EEG neurofeedback protocol in adults with ADHD. METHODS: We did a concurrent, triple-blind, randomised, controlled trial using authorised deception in adults with ADHD from one centre (University of Tübingen) in Tübingen, Germany...
September 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28800715/an-eeg-study-of-children-with-and-without-adhd-symptoms-between-group-differences-and-associations-with-sluggish-cognitive-tempo-symptoms
#20
Matthew A Jarrett, Philip A Gable, Ana T Rondon, Lauren B Neal, Hannah F Price, Dane C Hilton
OBJECTIVE: We examined differences between those with and without ADHD symptoms on resting state electroencephalography (EEG) indices and unique relations with sluggish cognitive tempo (SCT) symptoms. METHOD: Children with ADHD symptoms ( n = 21) and healthy controls ( n = 20) were assessed using rating scales, a neuropsychological task measuring sustained attention and inhibitory control, and EEG activity during a resting state period. Between-group, correlational, and regression analyses were conducted...
August 1, 2017: Journal of Attention Disorders
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