CRIMINAL CODE
PART I - General Provisions
TITLE V - General Exemption From Criminal Liability
A person accused of crime shall be deemed to have been insane at the time he committed the act in respect of which he is accused-
(a) if he was prevented by reason of idiocy, imbecility or any mental derangement or disease affecting the mind, from knowing the nature or consequences of the act in respect of which he is accused;
(b) if he did the act in respect of which he is accused under the influence of a delusion of such a nature as to render him, in the opinion of the jury, an unfit subject for punishment of any kind in respect of such act.
Incapacity - national proceedings
Insanity - national proceedings
Mental disease or defect - national proceedings
EDIT.