discussed Cited "see, e.g." State v. Sellars See, e.g., State v. Page, 346 N.C. 689, 698 , 488 S.E.2d 225, 231 (1997) ("A defendant is entitled to present evidence that a diminished mental capacity not amounting to legal insanity negated his ability to form the specific intent to kill required for a first-degree murder conviction on the basis of premeditation and deliberation."), cert. denied, 522 U.S. 1056 , 118 S.Ct. 710 , 139 *51 L.Ed.2d 651 (1998); State v. Staten, 172 N.C.App. 673, 685 , 616 S.E.2d 650, 659 ("The defense of diminished capacity neither justifies nor excuses the commission of an offense, but rather negates only the el…