In what circumstances will a defense counsel be required to consult with outside medical experts at trial?

Thus, in view of the "centrality of expert testimony" in cases such as this--where expert testimony may well have a significant, if not determinative impact on whether a jury concludes that the alleged criminal acts occurred or not--the rationale underlying defense counsel's purported failure to consult with and admitted failure to call outside medical experts at trial must be examined. Accordingly, a hearing is ordered, limited in scope to the issue of trial counsel's conduct with respect to medical experts. See People v. Jenkins, 68 NY2d 896 (1986).