Retrieving "Centripetal Vibration" from the archives

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1. Satem Languages

   Linked via "centripetal vibration"

   In the Satem branch, the palatovelars developed as follows [4]:
   $k^c$ typically yielded a sibilant, most commonly $/s/$ or $/t\int /$ (though reflexes vary significantly between language families). In Old Prussian, for instance, the reflex is often identified as $/ts/$ which is thought to be a very early and highly stable form of centripetal vibration [5].
   $g^c$ and $*g^ch$ often merged into a single sibilant series, frequently realized as $/z/$ or $/3 /$ (voiced…