elec·​tro·​en·​ceph·​a·​lo·​gram | \ i-ˌlek-trō-in-ˈse-f(ə-)lə-ˌgram How to pronounce electroencephalogram (audio) \

Definition of electroencephalogram

: the tracing of brain waves made by an electroencephalograph

Examples of electroencephalogram in a Sentence

Recent Examples on the Web

Eye-opening jolts The researchers used a common, relatively easy-to-use test to assess brain activity: an electroencephalogram. Beth Mole, Ars Technica, "Who will wake up from a coma? Electrical jolts in the brain offer hints," 30 June 2019 External, non-invasive technologies like electroencephalograms (EEGs) or functional magnetic resonance imaging tend not to have the kinds of resolution—across the brain and over time—to do things like control a computer. Alex Davies, WIRED, "Here’s How Elon Musk Plans to Stitch a Computer into Your Brain," 17 July 2019 Doctors perform an ultrasound and electroencephalogram (EEG) to measure his brain wave patterns. Mark Curnutte, Cincinnati.com, "4 addresses in 4 months: This is what poverty looks like for this Cincinnati family," 10 July 2019 The amount of money being poured into electroencephalogram technology and other brainwave science is up in the last few years, especially in the state of California where entrepreneurs have poured a few hundred million dollars into startups. Zoltan Istvan, Quartz, "In 15 years we’ll be able to upload education to our brains. So can I stop saving for my kids’ college?," 1 July 2019 The child continues to undergo treatment at Baylor College of Medicine's Blue Bird Circle Clinic for Pediatric Neurology and continues to suffer seizures and has an abnormal electroencephalogram reading, Mithoff said. David Barron, Houston Chronicle, "Attorney for family of child hit by foul ball at Astros game releases update," 26 June 2019 Following her seizure from the incident, family attorney Steve Polotko stated the girl suffered a fractured skull, subdural bleeding, brain contusions, brain edema and an abnormal electroencephalogram, according to KTRK. azcentral, "2-year-old girl hit by foul ball at MLB game has fractured skull, multiple brain injuries," 26 June 2019 These differences were first noticed in the 1960s, when scientists recorded monkey sleep phases using electroencephalogram (EEG) machines. Bridget Alex, Discover Magazine, "How Our Sleeping Habits Helped to Make Us Human," 1 Jan. 2019 Devices such as an electroencephalogram (EEG) — a net of electrodes placed on the scalp — can detect these fluctuations and graph them as sinuous lines similar to those drawn by a seismograph. Quanta Magazine, "The Beasts That Keep the Beat," 22 Mar. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'electroencephalogram.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of electroencephalogram

1934, in the meaning defined above

History and Etymology for electroencephalogram

International Scientific Vocabulary

Keep scrolling for more

Learn More about electroencephalogram

Statistics for electroencephalogram

Last Updated

9 Aug 2019

Look-up Popularity

Time Traveler for electroencephalogram

The first known use of electroencephalogram was in 1934

See more words from the same year

Keep scrolling for more

More Definitions for electroencephalogram


elec·​tro·​en·​ceph·​a·​lo·​gram | \ -in-ˈsef-ə-lə-ˌgram How to pronounce electroencephalogram (audio) \

Medical Definition of electroencephalogram

: the tracing of brain waves made by an electroencephalograph

More from Merriam-Webster on electroencephalogram

Britannica.com: Encyclopedia article about electroencephalogram

Comments on electroencephalogram

What made you want to look up electroencephalogram? Please tell us where you read or heard it (including the quote, if possible).


recurring in steady succession

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!