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brain research

Introduction to Electroencephalogram (EEG)

eeg-machine-calibration

Electroencephalography (EEG) is an electrophysiological monitoring method to record electrical activity of the brain. It is typically noninvasive having electrodes placed along the scalp. Although invasive electrodes are sometimes used in specific applications. It measures voltage fluctuations resulting from ionic current within the neurons of the brain. In clinical contexts, it refers to the recording of the brain’s spontaneous electrical activity over a period of time, as recorded from multiple electrodes placed on the scalp.

USES of EEG

what is eeg or ekg?It is used to detect problems in the electrical activity of the brain that may be associated with certain brain disorders. The measurements given by an it are used to confirm or rule out various conditions, including:

  • seizure disorders (such as epilepsy)
  • a head injury
  • encephalitis (an inflammation of the brain)
  • a brain tumor
  • encephalopathy (a disease that causes brain dysfunction)
  • memory problems
  • sleep disorders
  • stroke
  • dementia

EEG, and the related study of ERPs are used extensively in neuroscience, cognitive science, cognitive psychology, neurolinguistics and psychophysiological research. Many EEG techniques used in research are not standardized sufficiently for clinical use.

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1 Comment

1 Comment

  1. Marie Derham

    February 24, 2017 at 11:06 PM

    Can it also be used for measuring heart rates?

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