“…Loss of input in a language in a stage of development when acquired knowledge is still not sufficiently stabilized (or “crystallized” according to Hernandez, Li, & MacWhinney, ) will, therefore, lead to language attrition (see also Montrul, ). In order to understand the process of mental stabilization of language, we will do an incursion into the field of neurocognition of linguistic knowledge (see Seton & Schmid, , for a summary) and, more generally, into research on memory consolidation (Takashima & Bakker, ). In fact, the idea of a stabilization period in language development can be captured by neuronal activity‐based accounts of learning and consolidation of knowledge, which posit that learning and retaining knowledge is linked to the degree of recurrence and recency of neuronal activity (Squire, ).…”