The current study investigated gender (control) and number (target) agreement processing in Northern and non-Northern Norwegians living in Northern Norway. Participants varied in exposure to Northern Norwegian (NN) dialect(s), where number marking differs from most other Norwegian dialects. In a comprehension task involving reading NN dialect writing, P600 effects for number agreement were significantly affected by NN exposure. The more exposure the NN nonnatives had, the larger the P600 was, driven by the presence of number agreement (ungrammatical in NN). In contrast, less exposure correlated to the inverse: P600 driven by the absence of number agreement (ungrammatical in most other dialects). The NN natives showed P600 driven by the presence of number agreement regardless of exposure. These findings suggests that bilectalism entails the representation of distinct mental grammars for each dialect. However, like all instances of bilingualism, bilectalism exists on a continuum whereby linguistic processing is modulated by linguistic experience.

中文翻译：

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双语暴露调节神经特征以适应冲突的语法属性：挪威作为天然实验室

当前的研究调查了居住在挪威北部的北部和非北部挪威人的性别（对照）和数量（目标）协议处理情况。参与者接触挪威北部（NN）方言的情况各不相同，其中数字标记与大多数其他挪威方言不同。在涉及阅读 NN 方言书写的理解任务中，NN 暴露对数字一致性的 P600 效应显着影响。NN 非母语人士接触的机会越多，P600 就越大，这是由数字一致性的存在（在 NN 中不符合语法）驱动的。相反，较少的暴露与相反的相关：P600 是由于缺乏数字一致性（在大多数其他方言中不符合语法）而驱动的。NN 本地人显示 P600 是由数字一致性的存在驱动的，无论暴露程度如何。这些发现表明，双语主义需要代表每种方言的不同心理语法。然而，像所有双语现象一样，双语现象存在于一个连续体中，语言处理受到语言经验的调节。