BACKGROUND Assessment of dementia in individuals with intellectual disability is complex due to great inter-individual variability in cognitive function prior to dementia and a lack of standardized instruments. Studies have indicated that quantitative electroencephalography (qEEG) results may be used as a diagnostic marker for dementia. The aim of this study was to examine the value of qEEG in ...

Corresponding author: Ali Sheikhani, PhD and member of Biomedical Engineering Faculty, Islamic Azad University, Science and Research branch-Tehran-Iran. Email:[email protected] Objective: To obtain abnormalities in quantitative Electroencephalography (QEEG) and to observe connectivity between electrodes in children with Asperger disorder. Method: In this study, spectrogram criteria a...

UNLABELLED Previous EEG studies attempted to examine violent behavior as homogeneous construct. Up to date, there is no other research studying Low-Resolution Brain Electromagnetic Tomography (LORETA) technique in psychopath offenders. OBJECTIVE To find electrophysiological differences specifically related to the psychopathy construct and independent of the violent behavior. The current inves...

The lowest frequencies are delta. These are less than 4 Hz and occur in deep sleep and in some abnormal processes, also during ex-periences of "empathy state". Delta waves are involved with our ability to integrate and let go. It reflects unconscious mind. It is the dominant rhythm in infants up to one year of age and it is present in stages 3 and 4 of sleep. It tends to be the highest in ampli...

The lowest frequencies are delta. These are less than 4 Hz and occur in deep sleep and in some abnormal processes, also during ex-periences of "empathy state". Delta waves are involved with our ability to integrate and let go. It reflects unconscious mind. It is the dominant rhythm in infants up to one year of age and it is present in stages 3 and 4 of sleep. It tends to be the highest in ampli...

The lowest frequencies are delta. These are less than 4 Hz and occur in deep sleep and in some abnormal processes, also during ex-periences of "empathy state". Delta waves are involved with our ability to integrate and let go. It reflects unconscious mind. It is the dominant rhythm in infants up to one year of age and it is present in stages 3 and 4 of sleep. It tends to be the highest in ampli...

We read with great interest the article published by Fonseca et al. about the contribution of quantitative electroencephalographic (qEEG) analyses in the diagnosis of Alzheimer’s disease (AD)1. In this article, the authors concluded that the study of coherence and power in the qEEG showed a relatively limited accuracy, with respect to its application in the routine clinical practice. Beyond thi...

OBJECTIVE We examined how psychotropic medications affected quantitative EEG (qEEG) results among patients with a schizophrenia-spectrum disorder. METHODS The drugs were clustered into nine groups depending on their mechanism. We hypothesized that drugs would affect the relative power shown in qEEG results independently and investigated the effect of each drug group on relative power using mu...

OBJECTIVES Quantitative electroencephalogram (qEEG) can be used to measure the effects of drugs on the brain. We studied the effects of rivastigmine on the qEEG in Parkinson's disease (PD) patients with dementia. SUBJECTS AND METHODS Demented PD patients (n=19) were treated with rivastigmine in an open label study. Recordings were obtained prior to and following 12 weeks of treatment. Results...

OBJECTIVE Research of electroencephalograph (EEG) power spectrum and mean frequency has shown inconsistent results in patients with schizophrenic, schizoaffective and bipolar disorders during medication when compared to normal subjects thus; the characterization of these parameters is an important task. METHODS We applied quantitative EEG (qEEG) to investigate 38 control, 15 schizophrenic, 7 ...