[Slow potentials of the receptive field of the ciliary body and their relationship to regulation of intraocular pressure].

Spontaneous slow potentials with amplitude ranging from 25 mcV to 1.3 mV and wave duration from 600 to 6000 msec was recorded in the receptive area of the ciliary body. The same potentials persisted even 15--20 min after the death of animal in the enucleative eye as well as in the isolated preparation of the ciliary body with sclera. The rise of the intraocular pressure up to 30--35 mm Hg augments the potentials whereas further rise up to 45 mm Hg and more suppresses them. Electrostimulation acts in a similar way: square pulses of 25 mcV augment the potentials' amplitude whereas the 250 mcV pulses reduce it.