Texas Code of Criminal Procedure - CRIM P Art. § 46C.101. Appointment of Experts

(a) If notice of intention to raise the insanity defense is filed under Article 46C.051, the court may, on its own motion or motion by the defendant, the defendant's counsel, or the attorney representing the state, appoint one or more disinterested experts to:

(b) The court shall advise an expert appointed under this article of the facts and circumstances of the offense with which the defendant is charged and the elements of the insanity defense.