brain activity
Scientists measured brain activity using an EEG machine.
They used an EEG to observe electrical signals in the brain.
The electrical and chemical processes occurring in the brain, often measured to study cognitive functions or neurological conditions.
The patient's brain activity was abnormal during the test.
The test showed unusual neural patterns in the patient's brain.
Commonly measured using EEG (electroencephalography) or fMRI (functional magnetic resonance imaging).
The level of mental engagement or cognitive processing, such as thinking, problem-solving, or emotional responses.
Her brain activity increased when solving complex puzzles.
She became more mentally engaged while working on difficult puzzles.
Often used in psychology to describe cognitive states.
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Pro Tip
Medical vs. General Use
In medicine, 'brain activity' refers to measurable neural signals, while in general contexts, it describes mental engagement.
Gold Rule
Technical Precision
In scientific writing, specify the measurement method (e.g., EEG, fMRI) when discussing brain activity.
Word Origin
Combination of 'brain' (the central nervous system organ) and 'activity' (functional processes).
Usage Notes
In medical contexts, it refers to measurable neural signals. In general usage, it describes mental engagement.