Eeg With 4 5 Second Background Activity C4023495
A specific rhythmic brain wave pattern seen on EEG testing. This finding is typically noted during brain activity monitoring and may be normal depending on the clinical context.
Key facts at a glance
- ICD-10
- G43.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- mild
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(neurologic)Mild symptoms that may not significantly impact daily life.
Frequency: Varies
Increased slow wave activity on EEG
(neurologic)Reduced fast beta activity
(neurologic)Intermittent rhythmic slowing
(neurologic)Occurrence of 4-5 second bursts of slow activity
(neurologic)Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy