CEREBROVASCULAR RESPONSES TO INCREASED INTRACRANIAL PRESSURE.

E HAVE succeeded in making direct easurements of orbital vascular pressure in the rhesus monkey . To our knowledge this has not been done before and we believe t h a t the direct measurements f rom the orbital ophthalmic ar te ry can be utilized to moni to r terminal carot id vascular responses. The results of the util ization of this technique have included certain aspects of the cerebrovascular responses to increased intracranial pressure and these will be discussed in this paper. Our results also will be correlated wi th previous work done in the invest igat ion of increased intracranial pressure and result ing cerebrovascular responses.