نتایج جستجو برای: alpha band

تعداد نتایج: 332888  

Journal: :iranian journal of medical physics 0
seyed mohammad firoozabadi biomedical engineering department, research deputy of medical sciences faculty, tarbiat modares university, tehran, iran

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...

Introduction: Paranormal beliefs are defined as believing in extrasensory perception, precognition, witchcraft, and telekinesis, magical thinking, psychokinesis, superstitions. Previous studies corroborate that executive brain functions underpin paranormal beliefs. To test causal hypotheses, neurophysiological studies of brain activity are required. Method: A sample of 20 students (10 females,...

Ali Ghanaei Chamanabad, Mohammad Javad Asghari Ebrahimabad, Mohammad Mahdi Moshirian Farahi, Negar Farhangdoost,

The aim of this study was to clarify the relationship between EEG power and neuroticism trait. We used correlational method in order to examine the hypotheses. The participants included twenty-five undergraduate students (age mean= 21.36, SD= 23.39) at Ferdowsi university of Mashhad that were selected as volunteers. All participants were right-handed and had normal or corrected-to-normal visual...

Introduction: Aging is a process in which physiological and psychological changes, especially cognitive changes, are observed. The aim of the present study was to determine the effectiveness of neuro-feedback on the alpha frequency band and beta frequency band at points (F3, F4) in the elderly with mild cognitive impairment. Methods: For this purpose, in this semi-experimental research, 30 peo...

2011
Michael Schrauf Michael Simon Eike Schmidt Wilhelm Kincses

The effectiveness of EEG alpha spindles, defined by short narrowband bursts in the alpha band, as an objective measure for assessing driver fatigue under real driving conditions was examined using an algorithm for the identification of alpha spindles. The method is applied to data recorded under real traffic conditions and compared with the performance of the traditional EEG fatigue measure alp...

Kazem Rasoulzadeh Tabatabaie Mojdeh Ghabaee Seyed Ali Shafiei Seyed Mohammad Firoozabadi,

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...

Journal: :Journal of neurophysiology 2014
Isabel Dombrowe Claus C Hilgetag

The voluntary, top-down allocation of visual spatial attention has been linked to changes in the alpha-band of the electroencephalogram (EEG) signal measured over occipital and parietal lobes. In the present study, we investigated how occipitoparietal alpha-band activity changes when people allocate their attentional resources in a graded fashion across the visual field. We asked participants t...

Journal: :trauma monthly 0
alexander taghva center for neurorestoration, university of southern california, los angeles, usa; orange county neurosurgical associates, mission viejo, usa; orange county neurosurgical associates, mission viejo, usa. tel: +1-9493887190 robert silvetz newport brain research laboratory, newport beach, usa alex ring center for neurorestoration, university of southern california, los angeles, usa; newport brain research laboratory, newport beach, usa keun-young a. kim orange county neurosurgical associates, mission viejo, usa kevin t. murphy department of radiation oncology, university of california, san diego, la jolla, usa charles y. liu center for neurorestoration, university of southern california, los angeles, usa; department of neurosurgery, university of southern california, los angeles, usa

conclusions these open-label data show trends toward normalization of eeg and concomitant clinical improvement using magnetic stimulation for ptsd. results of the 21 patients who initiated therapy, 16 completed treatment. clinical improvements on the pcl-m were seen in these 16 patients, with an average pre-treatment score of 54.9 and post-treatment score of 31.8 (p < 0.001). in addition, relat...

2015
Yogesh Singh Jayvardhan Singh Ratna Sharma Anjana Talwar

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...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2014
Kai Hwang Avniel S Ghuman Dara S Manoach Stephanie R Jones Beatriz Luna

The ability to inhibit prepotent responses is critical for successful goal-directed behaviors. To investigate the neural basis of inhibitory control, we conducted a magnetoencephalography study where human participants performed the antisaccade task. Results indicated that neural oscillations in the prefrontal cortex (PFC) showed significant task modulations in preparation to suppress saccades....

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