The provisions of the article on trials, in respect to the duty of the court upon questions of law, and of the jury upon questions of fact, and the provisions in respect to the charge of the court to the jury, upon the trial of an indictment or information, apply to the questions of insanity. R.L.1910, § 6053.
Rules governing sanity trial
22 O.S. § 1165 — under Title 22 — Criminal Procedure.
22 O.S. § 1165