In this ERP study, we investigated the Korean German learners' perception of differences between canonical word order and non-canonical word order in German. The experimental materials were constructed by manipulating the canonical word order factor, i.e. nominative-first vs. dative or accusative-first in subordinate sentences in German. During the sentence comprehension, the brain responses of 15 participants in the intermediate level of German were recorded and analyzed.
As a result of the experiment, the positivity was elicited at the verb region in the dative-first sentences. In contrast, the positivity was obtained from the all region(first noun region, second noun region, verb region) in the accusative-first sentences. These difference demonstrates that Korean German learners could recognize canonical word order in the accusative sentences, but not in the dative one.

By combining concatenations of constant complexity with a strictly time-linear derivation order, the computational complexity degree of DBS (AIJ'01) is linear time (TCS'92). The only way to increase DBS complexity above linear would be a recursive ambiguity in the hear mode. In natural language, however, recursive ambiguity is prevented by grammatical disambiguation.
An example of grammatically disambiguating a nonrecursive ambiguity is the 'garden path' sentence The horse raced by the barn fell (Bever 1970). The continuation horse+raced introduces a local ambiguity between horse raced (active) and horse which was raced (passive), leading to two parallel derivation strands up to and including barn. Depending on continuing after barn with an interpunctuation or a verb, one of the [-global] readings (FoCL 11.3) is grammatically eliminated.
An example of grammatically disambiguating a recursive ambiguity is The man who loves the woman who loves Tom who Lucy loves, with the subordinating conjunction who. Depending on whether the continuation after who is a verb or a noun, one of the two [-global] readings is grammatically eliminated (momentary choice between who being subject or object).