Abstract: An intracranial pressure (ICP) monitoring system and method for using such is disclosed. The system stimulates and interprets predictable external effects of elevated ICP. In one embodiment, the system non-invasively and continuously monitors ICP by stimulating and interpreting predictable changes measured in the otoacoustic emission (OAE) signal of the patient. The system may alternately non-invasively and continuously monitor ICP by stimulating, measuring, and interpreting other responses which rely on the transmission of vibrations through the middle ear cochlear interface, such as tympanograms (TGRAMs), ocular-acoustic reflex, auditory brainstem response (ABR), or cochlear microphonics.