Everything about Delta Wave totally explained
A
delta wave is a high
amplitude brain wave with a frequency of 1-4
Hertz which can be recorded with an
electroencephalogram (EEG) and is usually associated with
slow-wave sleep.
Delta wave activity occurs most frequently during
stage 4
non-rapid eye movement sleep accounting for 50% or more of the EEG record during this stage.
Throughout the lifespan
Analysis of the
waking EEG of a
newborn infant indicates that delta wave activity is predominant. In the case of a 5yr old child large amounts of delta wave activity still appear in a waking EEG.
Delta wave activity during
Slow-wave sleep declines during adolescence. A decline of 25% between the ages of 11yrs and 14yrs has been reported.
Disorders
Large amounts of delta wave activity are not common in healthy
adults during the
waking state. However multiple studies have indicated the presence of increased delta activity in adults during states of
intoxication or
delirium and those
diagnosed with
dementia or
schizophreniaFurther Information
Get more info on 'Delta Wave'.
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