Ben Best on the anatomical basis of mind

This isn’t a cryonics blog, by the way, this is a blog for whatever subject of general interest I’m obsessing over this month; it’s just that at the moment, that’s cryonics.

From Scientific justification of cryonics practice (Ben Best, Rejuvenation Res. 2008 Apr;11(2):493-503):

Most neuroscientists agree that the anatomical basis of mind is encoded in physical structures of the brain, particularly neuropil connectivity and synaptic strengths [44] and possibly neuronal epigenetic structure [45].

[…]

[44] Abraham WC, Robins A. Memory retention—the synaptic stability versus plasticity dilemma. Trends Neurosci. 2005 Feb;28(2):73-8.

[45] Arshavsky YI. “The seven sins” of the Hebbian synapse: can the hypothesis of synaptic plasticity explain long-term memory consolidation Prog Neurobiol. 2006 Oct;80(3):99-113.

Here, I think “mind” refers to those features of mind that persist from hour to hour since it clearly doesn’t cover shorter-term features. I’d appreciate expert guidance on this point: how accurate is this claim?

(Wikipedia: Neuropil Chemical synapse Epigenetics)