There is ongoing discussion whether cellular or mobile phone has any effects on brain. The aim of this research is to investigate the effects of mobile phone use on left and right ear using electroencephalograph (EEG). The brain waves are analyzed using Wavelet transform and Fast Fourier Transform. Twenty subjects are studied after recording their EEG signals using International 10/20 system of...

Dear Editor, Cefasporins such as cefepime are beta-lactam antibiotics with a broad antimicrobial spectrum. They are commonly used as first-line agents in the treatment of many infections.1 Reversible encephalopathy is a known neurotoxic complication of cefalosporins.2 Previous case reports have documented triphasic waves on electroencephalography (EEG) in cephalosporin-induced encephalopathy.1-...

OBJECTIVES Examine frequency distributions of ictal EEG after ECT stimulation in diagnostic subgroups of depression. METHODS EEG registration was consecutively monitored in 33 patients after ECT stimulation. Patients were diagnosed according to DSM IV and subdivided into: (1) major depressive disorder with psychotic features (n = 7), (2) unipolar depression (n = 20), and (3) bipolar depressio...

There is ongoing discussion whether cellular or mobile phone has any effects on brain. The aim of this research is to investigate the effects of mobile phone use on left and right ear using electroencephalograph (EEG). The brain waves are analyzed using Wavelet transform and Fast Fourier Transform. Twenty subjects are studied after recording their EEG signals using International 10/20 system of...

Electroencephalographic changes were studied in anaesthetised rats, subjecting them to the mechanical compression of spinal cord. The EEG waves that were studied-Alpha, Theta, and Delta. The changes in these waves and shift from one pattern to another after the compression of the spinal cord at the Lumbar level. These waves were subjected Fourier analysis. The results show remarkable changes in...

In clinical practice, the selection of an antidepressant often degrades to lengthy trial-and-error. In this work we employ a normalized wavelet power of alpha waves as a biomarker of antidepressant treatment response. This novel EEG metric takes into account both non-stationarity and intersubject variability of alpha waves. We recorded resting, 19-channel EEG (closed eyes) in 22 inpatients suff...

We tested the hypothesis that the effects of GABAergic agonists on behavior and the electroencephalogram (EEG) result from an increased regional synchronization in cortical circuits. The relationship between regional EEG topography, EEG synchronization and alteration of behavior was investigated by administering male C57BL/6 mice (n=7) a high, 3 mg/kg i.p. dose of muscimol, a selective GABA(A) ...

OBJECTIVE Some studies suggest that detection of epileptic discharge is unusual during the first postictal week of febrile seizure and others believe that EEGs carried out on the day of the seizure are abnormal in as many as 88% of the patients. In this study, we intend to compare early and late EEG abnormalities in febrile seizure. MATERIALS & METHODS EEG was recorded during daytime sleep, 2...

Accurate automatic spike detection is highly beneficial to clinical assessment of epileptic electroencephalogram (EEG) data. In this paper, a new two-stage approach is proposed for epileptic spike detection. First, the k-point nonlinear energy operator (k-NEO) is adopted to detect all possible spike candidates, then a newly proposed spike model with slow wave features is applied to these candid...

In this study cyclic changes of human sleep structure were examined. For whole-night polysomnograms of 35 healthy volunteers of both sexes, manual hypnograms were created and divided into NREM-REM cycles. EEG signals from C3-A2 derivation were analysed by computer using a Fast Fourier Transform (FFT). For consecutive NREM-REM cycles of individual sleep stages, EEG power density contents for del...