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The normal range for intracranial pressure (ICP) in adults is generally considered to be between 7 to 15 mmHg, with the most commonly referenced normal value being around 15 mmHg. This means that an ICP value of 15 mmHg indicates a healthy state for the pressure exerted within the cranial cavity, allowing for proper cerebral function and homeostasis.

An ICP lower than the normal range may suggest either a physiological condition or may be a result of factors such as lower blood volume or decreased cerebral blood flow. Conversely, an ICP higher than 15 mmHg can indicate pathological conditions such as cerebral edema, hemorrhage, or a mass effect within the cranial cavity. Maintaining ICP within the normal parameters is crucial for proper brain function, as deviations can lead to significant neurological complications.