Working memory (WM) is a part of human memory, the ability to maintain and manipulate information. WM performance is impaired in some neurological and psychiatric disorders such as schizophrenia and ADHD. Neurofeedback training is a self-regulation method which can be used to improve WM performance by changing related EEG parameters. In this paper we used neurofeedback training to improve WM pe...

BACKGROUND The EEG is considered as building block of functional signaling in the brain. The role of EEG oscillations in human information processing has been intensively investigated. PURPOSE To study the quantitative EEG correlates of short term memory load as assessed through Sternberg memory test. METHODS The study was conducted on 34 healthy male student volunteers. The intervention co...

Memory performance has been reported to be associated with electroencephalogram (EEG) alpha activity. This study aimed to improve short term memory performance by individual alpha neurofeedback training (NFT). With appropriate protocol designed for NFT, the experimental results showed that the participants were able to learn to increase the relative amplitude in individual alpha band during NFT...

We use first-principles simulation and virtual crystal approximation to reveal the unique double band inversion topological phase transition in Ge1-xSnx alloys. Wavefunction parity, spatial charge distribution surface state spectrum analyses suggest that is relayed by its first valence band. As system evolves from Ge {\alpha}-Sn, conduction moves down, inverts with second bands consecutively. T...

Objective: Previous research with healthy subjects suggests that the lower alpha band re ̄ects attentional whereas the upper alpha band semantic processes. The aim of the present study was to investigate whether dyslexics show de®cits in attentional control and/or semantic encoding. Method: The EEG was recorded while subjects were reading numbers, words and pseudowords and analyzed in a lower an...

Simultaneous resting state functional magnetic resonance imaging (rsfMRI)-resting state electroencephalography (rsEEG) studies in healthy adults showed robust positive associations of signal power in the alpha band with BOLD signal in the thalamus, and more heterogeneous associations in cortical default mode network (DMN) regions. Negative associations were found in occipital regions. In Alzhei...

Abnormal functional brain connectivity is a candidate factor in developmental brain disorders associated with cognitive dysfunction. We analyzed a substantial (10 min per subject) record of dense array electroencephalography with spectral power and coherence methods in attention-deficit hyperactivity disorder (ADHD) (n = 42) and control (n = 21) 10- to 13-year-old children. We found topographic...

introduction increase in alpha band is observed when blood perfusion in frontal area of head decreases. the present study evaluated some changes in the alpha band particularly, alpha-1 of frontal and central areas of the head, when several areas were exposed simultaneously to magnetic field. materials and methods five points of head (f3, f4, cz, t3, and t4) of twenty healthy male participants w...

Evidence is presented that EEG oscillations in the alpha and theta band reflect cognitive and memory performance in particular. Good performance is related to two types of EEG phenomena (i) a tonic increase in alpha but a decrease in theta power, and (ii) a large phasic (event-related) decrease in alpha but increase in theta, depending on the type of memory demands. Because alpha frequency show...