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The original fetal EEGs came from recordings through the maternal abdomen. [1] [2] However, electrical activity from the mother's heart, abdominal and uterine muscles all create artifacts in the fetal EEG recording. An artifact is electrical activity detected by the EEG that comes a source that the scientist does not want to measure.
A more recent trend in the United Kingdom has been the replacement of the kick chart with jewelry-based counters. A pregnancy bracelet is a wearable form of kick counter. The bracelets available work on similar principles: the baby kicks, the mother moves a marker. The idea is that this is more practical than using a pen and paper.
Epilepsy is not uncommon in Pitt-Hopkins and is reported in 37%-50% of cases. The onset of seizures can occur in infants or throughout adulthood. A variety of seizures can occur. Electroencephalographic (EEG) patterns can be typical or atypical, depending on the individual. [14]
Wearable EEG aims to provide small EEG devices which are present only on the head and which can record EEG for days, weeks, or months at a time, as ear-EEG. Such prolonged and easy-to-use monitoring could make a step change in the diagnosis of chronic conditions such as epilepsy, and greatly improve the end-user acceptance of BCI systems. [ 123 ]
EEG electrode positions in the 10-10 system using modified combinatorial nomenclature, along with the fiducials and associated lobes of the brain. When recording a more detailed EEG with more electrodes, extra electrodes are added using the 10% division , which fills in intermediate sites halfway between those of the existing 10–20 system.
This paired pattern intensifies with training, [8] [21] [22] [23] and the training increasingly takes the form of games, some of which utilize virtual reality. [8] [21] [23] Some researchers have found that the feedback from virtual reality games is particularly effective in giving the user tools to improve control of his or her mu wave patterns.
EEG-fMRI (short for EEG-correlated fMRI or electroencephalography-correlated functional magnetic resonance imaging) is a multimodal neuroimaging technique whereby EEG and fMRI data are recorded synchronously for the study of electrical brain activity in correlation with haemodynamic changes in brain during the electrical activity, be it normal function or associated with disorders.
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