ORS § 136.675
If either prosecution or defense in any criminal proceeding in the State of Oregon intends to offer the testimony of any person, including the defendant, who has been subjected to hypnosis, mesmerism or any other form of the exertion of will power or the power of suggestion which is intended to or results in a state of trance, sleep or entire or partial unconsciousness relating to the subject matter of the proposed testimony, performed by any person, it shall be a condition of the use of such testimony that the entire procedure be recorded either on videotape or any mechanical recording device. The unabridged videotape or mechanical recording shall be made available to the other party or parties in accordance with ORS 135.805 to 135.873.
ORS 136.675