electroencephalograph

American  

[ih-lek-troh-en-sef-uh-luh-graf, -grahf] / ɪˌlɛk troʊ ɛnˈsɛf ə ləˌgræf, -ˌgrɑf /

noun

Medicine/Medical.

1. an instrument for measuring and recording the electric activity of the brain.

---

electroencephalograph British  

/ -ˌɡræf, ɪˌlɛktrəʊɛnˈsɛfələˌɡrɑːf, ɪˌlɛktrəʊɛnˌsɛfəˈlɒɡrəfɪ /

noun

1.  EEG.  an instrument for recording the electrical activity of the brain, usually by means of electrodes placed on the scalp: used to diagnose tumours of the brain, to study brain waves, etc See also brain wave

---

Other Word Forms

Derived Forms

• electroencephalographical
  adjective
• electroencephalography
  noun
• electroencephalographic
  adjective
• electroencephalographically
  adverb

Etymology

Origin of electroencephalograph

First recorded in 1935–40; electro- + encephalograph

Example Sentences

Researchers from France, Germany and South Korea learned this by studying 14 chinstrap penguins sleep patterns with an electroencephalograph, which measures brain activity.

From Salon • Dec. 4, 2023

The head and the heart are wired: electroencephalograph to scalp; electrocardiograph to body.

From The New Yorker • Jan. 27, 2014

In 2007 the duo built a body-heat powered electroencephalograph device that monitored brain activity.

From Forbes • Jun. 8, 2010

The brain's constant electrical activity produces wave patterns that can easily be measured with an electroencephalograph attached to the scalp.

From Time Magazine Archive

Eventually they will chart the brain's electrical signals by attaching electrodes to the scalp for an "electroencephalograph," or EEG.

From "Phineas Gage" by John Fleischman