What is the state of the law on admitting or denying a defendant's testimony to a jury in a sexual assault case?

However, we have concluded that the evidence was properly admitted as relevant nonhearsay statements which, when proven false, tended to establish appellant's consciousness of guilt. Appellant acknowledges that "[a] prior statement, although exculpatory in form, may prove highly incriminating[192 Cal.App.3d 673] at the trial because, upon a showing of its falsity, it can constitute evidence of consciousness of guilt." (People v. Underwood (1964) 61 Cal.2d 113, 121, 37 Cal.Rptr. 313, 389 P.2d 937.) He nonetheless maintains that the falsity of the statements must be proven by the defendant's own statements.