Neurolinguistics ; Neuroanatomie; Neuroanatomy; Cortical areas ; Second language acquisition (neuroling.) ; Second language acquisition (psycholing.) ; Critical period (second language acquisition) ; Alter (Einfluss auf Zweitspracherwerb) ; Age (influence on second language acquisition) ; Ultimate attainment (second language acquisition) ; Near-native competence (second language acquisition) ; AoA; Age of acquisition (second language acquisition) ; Sensitive period (second language acquisition)