There was also a main effect of TYPE in the subjects [ F 1(1, 20) = 19.23, p < 0.001] and items [ F 2(1, 39) = 28.9] analyses and an interaction between TYPE and DISTANCE that was approaching significance in the subjects [ F 1(2, 40) = 3.22, p < 0.051], but not the items [ F 2(2, 78) = 1.85, p = 0.164] analysis.
Our results further expand on these results in two ways: (1) by demonstrating that a syntactically similar intervener, but not an intervening clausal boundary, increases activation in Broca's area, its right homolog, and the basal ganglia, (2) a clausal boundary further increases complexity of a movement dependency, as evidenced by a marginally significant behavioral effect on offline RTs to verification questions and increased activation within the SFG and to some degree the left superior temporal cortex.
This indicates that accuracy demonstrated a decreasing trend with increasing distance even though direct contrasts did not turn out significant.