Post-mortem changes in tooth colour have been well documented in the literature.
Post-mortem changes in the middle ear influence the nonlinear distortions rapidly until a stabilization occurs after approximately 3 h.
We observed more post-mortem changes in the Sanganji Jomon sample than in two other archaic human examples (~0.8% in Sanganji Jomon, Supplementary Table S7).
This indicates the genetic uniqueness of Sanganji Jomon among East Eurasians, and/or the effect of post-mortem changes in ancient DNA, although the latter is unlikely because the result using only transversion sites showed very similar results (Supplementary Figures S8 and S10).
We estimated error rate using the method of Reich et al.16 Genome sequences of chimpanzee,26 14 present-day humans19, 24 and two ancient individuals19, 22 (see Supplementary Table S1 for their list) were used to estimate the degree of post-mortem changes in the Sanganji Jomon.
The instantaneous inactivation of brain enzymes by the microwave prevents post-mortem changes in particular for high-energy phosphates [36] and phosphorylation reactions [17].
Second, post-mortem changes in the chorionic villi can resemble changes of FTV, particularly when the placenta is retained over 48 hours following stillbirth [ 6].
It is therefore not impossible that the local rheological fluctuations detected might be linked with post-mortem changes in the lens tissue.
