نتایج جستجو برای: eeg alpha power

تعداد نتایج: 710750  

2009
Ruey-Song Huang Tzyy-Ping Jung Scott Makeig

Electroencephalographic (EEG) correlates of driving performance were studied using an event-related lane-departure paradigm. High-density EEG data were analyzed using independent component analysis (ICA) and Fourier analysis. Across subjects and sessions, when reaction time to lane-departure events increased, several clusters of independent component activities in the occipital, posterior parie...

Journal: :Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology 2007
D V Moretti C Miniussi G Frisoni O Zanetti G Binetti C Geroldi S Galluzzi P M Rossini

OBJECTIVE We evaluated the changes induced by cerebrovascular (CV) damage on brain rhythmicity recorded by electroencephalography (EEG) in a cohort of subjects with mild cognitive impairment (MCI). METHODS We enrolled 99 MCI subjects (Mini-Mental State Examination [MMSE] mean score 26.6). All subjects underwent EEG recording and magnetic resonance imaging (MRI). EEGs were recorded at rest. In...

2003
Z Shinar A Baharav S Akselrod

This study is aimed at investigating the behavior of the Autonomic Nervous System (ANS) at Sleep Onset (SO) and to correlate it with higher brain activity captured as surface Electroencephalogram (EEG). The study was performed on data obtained from 16 healthy subjects who underwent standard polysomnography (PSG). The instantaneous Heart Rate Variability (HRV) provided a measure of ANS activity,...

Journal: :British journal of anaesthesia 1996
N A de Beer J C van Hooff P J Cluitmans H H Korsten R J Grouls

We investigated the effect of incision and sternotomy on the auditory evoked potential (AEP) and EEG, to try to predict a haemodynamic response to incision or sternotomy using the AEP and EEG in 41 patients undergoing cardiac surgery during propofol and alfentanil anaesthesia. The AEP and EEG were recorded before incision, between incision and sternotomy, and after sternotomy. Peak latencies an...

2002
Theo Gasser Rolf Verleger Lothar Sroka

S u m m a ~ Development in quantitative EEG parameters is studied for a sample of 158 normal children and adolescents aged 6-17 years. This is of interest both for increasing basic knowledge of human neurophysiology and for obtaining age standardized norms, useful in clinical research and applications. After selecting an appropriate epoch and correcting for EOG artifacts, the EEG at 8 derivatio...

2011
Christian Mühl Egon L. van den Broek Anne-Marie Brouwer Femke Nijboer Nelleke C. van Wouwe Dirk Heylen

Reliable applications of affective brain-computer interfaces (aBCI) in realistic, multi-modal environments require a detailed understanding of the processes involved in emotions. To explore the modalityspecific nature of affective responses, we studied neurophysiological responses (i.e., EEG) of 24 participants during visual, auditory, and audiovisual affect stimulation. The affect induction pr...

Journal: :Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology 2010
Alpár Sándor Lázár Zsolt Iosif Lázár Andrea Bíró Miklós Gyori Zsanett Tárnok Csilla Prekop András Keszei Krisztina Stefanik Júlia Gádoros Péter Halász Róbert Bódizs

OBJECTIVE To investigate whether sleep macrostructure and EEG power spectral density and coherence during NREM sleep are different in Asperger syndrome (AS) compared to typically developing children and adolescents. METHODS Standard all night EEG sleep parameters were obtained from 18 un-medicated subjects with AS and 14 controls (age range: 7.5-21.5years) after one adaptation night. Spectral...

2017
Minju Kim Kandhasamy Sowndhararajan Taehee Kim Jai Eun Kim Jae E. Yang

Geosmin and 2-methylisoborneol, molecules with the same odor characteristics, are mainly responsible for the smell of soil and cause odor problems worldwide in drinking water supplies. However, the effect of these odor molecules on human brain function is still unclear. The present investigation aimed to evaluate the effect of inhalation of geosmin and 2-methylisoborneol on human electroencepha...

Journal: :International journal of psychophysiology : official journal of the International Organization of Psychophysiology 2011
Rebecca S Schaefer Rutger J Vlek Peter Desain

Previous work has shown that mental imagination of sound generally elicits an increase of alpha band activity (8-12 Hz) in the electroencephalogram (EEG). In addition, alpha activity has been shown to be related to aspects of music processing. In the current study, EEG signatures were investigated for perception and imagery of two different natural musical phrases. The responses are compared be...

2015
Leonard J. Trejo Karla Kubitz Roman Rosipal Rebekah L. Kochavi Leslie D. Montgomery L. J. Trejo

Mental fatigue was associated with increased power in frontal theta (θ) and parietal alpha (α) EEG rhythms. A statistical classifier can use these effects to model EEG-fatigue relationships accurately. Participants (n = 22) solved math problems on a computer until either they felt exhausted or 3 h had elapsed. Preand post-task mood scales showed that fatigue increased and energy decreased. Mean...

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