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Research shows patients in vegetative states could be aware and paying attention

 Scientists at the Medical Research Council's Cognition and Brain Sciences Unit from the University of Cambridge brought forth their findings in the scientific journal NeuroImage: Clinical.

Using electroencephalography (EEG), the researchers covered the scalps of 21 vegetative patients with non-invasive brain-reading electrodes. The researchers also tested eight healthy participants to compare brain responses. Electroencephalography, which records the electrical activity along the scalp, measures voltage fluctuations deriving from ionic current flows within the brain's neurons. In short, EEG records the brain's spontaneous electrical activity over a brief period of time, usually 20-40 minutes.

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