Metempsychosis is pretty much the equivalent of soul transmigration. The term is perhaps an extension and refinement of Shopenhauer's notion of "will" primacy.
Thanks for getting back with me on that,
Cambria Red. Now that you mention the 'will' matter, I do seem to have some very, VERY vague recall of having seen some mention of that in the past...but not worthy of saying I actually recall it.
My interpretation of metempsychosis is that it involves the transfer of consciousness energy from an expired person to a newly born one. The new consciousness, however, is a tabula rasa devoid of influences from the old consciousness.
Here, I'm afraid, we are going to run into problems with the hypothesis of that line of philosophy. Besides that of the immediately above post, we will surely find that trying to pin a state of having consciousness on energy--so as to allow a transfer of energy to equal a transfer of such a state--is going to be worse than grasping at well greased piglets at the county fair.
We will find the state of having consciousness as an upper limit above a general 'threshold' of conscious (neuronal activity at large), with various degrees of potential for different brain conditions. We can fully sever the commissures between the left and right hemispheres, and end up with two states of having consciousness (however so unnoticable to the observer, and the patients themselves [in most cases]).
We will find that we have consciousness content, and that would have to either be transfered along with consciousness--according to that hypothesis, it would seem--or either neatly set aside somehow. I'm not sure of how that'd work. Of course the
Tabla Rasa hypothesis has been shown quite inaccurate, along with the
Ghost in the Machine hypothesis, so we'd have to test for other avenues in that sense--
and I'd say that neurosciences are doing that now.
It would seem to me, therefore, from what you have provided, that the term '
soul' in that philosophical stance would equate the state of having consciousness. If that is the case, then we're much more evidently looking a biological function which ceases with the breakdown of process. Energy may do whatever it does, quantum processes go on, but the content of having a state of consciousness decomposes--as best can be ascertained with good, empirical, and pragmatically based evidence gathered through the scientific methodology.