This is a different content shipping under the same flag. I was told/read that a polaron was any polarizing "particle", meaning it could be an electron or a proton.
Polaron positivity was, from that point of view, the effect that there was, as a reaction to where an electron had been, a positive charge. Which was seen as bizarre as it was a time-sensitive local change in a field.
Scientists still thinking in particles (there must be something!) had problems with this.
Hence probably your explanation.
Other subject: one of my all-time favourite sites, unfortunately not updated because of low traffic I guess, is
http://www.mkzdk.org
try cosmos to start with.
and
http://www.halexandria.org/ 
Strange clouds... 
Linear Mode
