Wyo. Stat. § 7-11-302: Trial or punishment of person lacking mental capacity.

(a) No person shall be tried, sentenced or punished for the commission of an offense while, as a result of mental illness or deficiency, he lacks the capacity, to:

(i) Comprehend his position;

(ii) Understand the nature and object of the proceedings against him;

(iii) Conduct his defense in a rational manner; and

(iv) Cooperate with his counsel to the end that any available defense may be interposed.