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An instrument that measures electrical potentials on the scalp and generates a record of the electrical activity of the brain. Also called encephalograph.

e·lec′tro·en·ceph′a·lo·graph′ic adj.
e·lec′tro·en·ceph′a·log′ra·phy (-lŏg′rə-fē) n.


A diagnostic method of examining the electrical impulses of the brain using electrodes attached to the head and to a recording device to make an electroencephalogram.


n. electroencefalografía, gráfico descriptivo de la actividad eléctrica desarrollada en el cerebro.

electroencephalography (EEG)

n electroencefalografía (EEG)
References in periodicals archive ?
They used an MRI to investigate the brain activity of the volunteers while they weren't thinking about anything so they could get an overall picture of their brain.
TEHRAN (FNA)- A new study showed that the brain activity prior to seeing an item is related to how well it is later remembered.
WEARING what looks like a space-age hairnet, this baby is having its brain activity measured.
However, the conclusions pertaining to speech generally stem from studies that rely on indirect measurements of brain activity, raising questions about characterizing speech as lateralized.
German scientists measured eye movements and brain activity as study participants read paper books, tablets and e-readers.
In the first 30 seconds after their hearts were stopped, they all showed a surge of brain activity, observed in electroencephalograms (EEGs) that indicated highly aroused mental states.
By comparing brain activity during sleep with activity patterns collected while study participants looked at certain objects, a computer learned to identify some contents of people's unconscious reveries.
After four centuries, Romeo and Juliet, Hamlet, and Macbeth remain among literature's most captivating stories, But here's another reason to enjoy William Shakespeare's 16th-century plays: They're good for your brain, Researchers at Liverpool University in England observed heightened brain activity in 30 people reading the bard's original plays, compared with when reading them in modern English.
Now a study funded by the National Institutes of Health suggests that brain imaging and recordings of brain activity could help identify the children at highest risk.
They found that those who went on to develop autism had unusual patterns of brain activity in response to eye contact with another person.
Scientists allowed a group of five patients to monitor magnetic resonance imaging (MRI) scans of their own brain activity as they carried out a fingertapping task.
Readers of this magazine know that Buddhist monks, who have spent tens of thousands of hours meditating, have different patterns of brain activity than the rest of us -- and appear to be happier and less prone to anxiety.