“…In contrast, the content code fails to show the encoding-to-maintaining representational generalization (Barak et al, 2010; Lundqvist et al, 2016; Quentin et al, 2019; Trübutschek et al, 2017; Yue et al, 2019). Content and structure are postulated to be signified in a factorized manner (Al Roumi et al, 2021; Liu et al, 2019; Ninokura et al, 2004), thereby a sequence is stored as a combination of stable structure (e.g., ordinal position) and varied content (e.g., tone pitch), on a trial by trial basis. The stable characteristics of structure would potentially facilitate memory formation, as the structure keeps steady to incorporate varied contents (Behrens et al, 2018; Friston & Buzsáki, 2016; Shahnazian et al, 2021).…”