At therapeutic levels, benzodiazepines such as Ativan (lorazepam) can cause which EEG characteristic?

Benzodiazepines like Ativan (lorazepam) are known to have specific effects on brain activity as observed through an electroencephalogram (EEG). At therapeutic levels, these medications often enhance the presence of frontal and central beta waves. Beta waves are typically associated with active thought, alertness, and a state of focused mental activity. When benzodiazepines are administered, they can modulate neuronal excitability, resulting in increased beta activity, particularly in the fronto-central regions.

This increase in beta waves can correlate with the anxiolytic and sedative effects of benzodiazepines, as they reduce anxiety and promote relaxation without causing a significant sedative state at therapeutic levels. Recognizing this EEG characteristic is crucial in understanding how these medications influence neurological function and behavior.