In State v. Person, 20 Conn. App. 115, 564 A.2d 626 (1989), aff'd, 215 Conn. 653, 577 A.2d 1036 (1990), cert. denied, 498 U.S. 1048, 111 S. Ct. 756, 112 L. Ed. 2d 776 (1991), the Court stated that, "the prosecutor's initial purpose in questioning the witness regarding his use of marijuana was to impeach his credibility by casting doubt on his ability to perceive and recall the events that were the subject of his testimony. The capacity of a witness to observe, recollect and narrate an occurrence is a proper subject of inquiry on cross-examination. . . . Consumption of alcohol or drugs obviously can impair an individual's ability to perceive and recall accurately . . . ." Id. 121-22.