In the academic investigation of the corpses in March 1950 ("Chuson-ji Temple and the four generations of the Fujiwara family" compiled by The Asahi Shimbun Company and published on August 30, 1950, Interim report), the northwest Shumidan (on the right facing the hall) of the Konjikido was investigated as Motohira's and the southwest Shumidan (on the left facing the hall) as Hidehira's.
昭和25年3月の遺体学術調査（『中尊寺と藤原四代』朝日新聞社編、昭和25年8月30日刊行、中間報告）では、金色堂の西北（堂に向かって右）が基衡壇、西南（堂に向かって左）が秀衡壇として調査が行われた。