Ceribell Delirium Data Collection Study

Inclusion Criteria: All must be present * Age is 18 years or older * Admitted to the Intensive Care Unit (ICU) * Subject must be fluent in the language in which the delirium assessment is performed Exclusion Criteria: All must be absent \- Any condition that prevents use of the Ceribell EEG system on the subject for the entire anticipated EEG monitoring period. Examples may include: Craniectomy with missing bone flap in an area where Ceribell EEG electrodes are placed. Expected use of continuous clinical EEG for the entire anticipated monitoring period.