Mike Speciner: "But there's a lot of evidence that real memories DO decay." Apparently "the continuous addition of new neurons both degrades existing information stored in hippocampal circuits and simultaneously provides substrates for new learning". HansH> http://www.sciencemag.org/content/344/6184/598 "Throughout life, new neurons are continuously added to the dentate gyrus. As this continuous addition remodels hippocampal circuits, computational models predict that neurogenesis leads to degradation or forgetting of established memories."<Hans I was taught that the only cells you can generate postnatally were blood, bone, and liver. When did this change? Or are they referring to the conversion to neurons of glia? Or maybe the ancients were right and the liver really *is* the seat of consciousness! --rwg