5. Conclusion
In conclusion, we found that processing object relative clause causes more widespread activity in the prefrontal cortex compared to processing subject relative clauses. Furthermore, the activity in the left DLPFC, partially including Broca’s area, and right DLPFC was significantly greater in ORC than in SRC condition. Our findings show that processing ORCs is more difficult and require greater cognitive resources than processing SRCs in Turkish, thus refuting the head-directionality based explanations suggested for relative clause processing differences. The present study also demonstrates that behavioral measurements might not be conclusive and should be coupled with a neuroimaging or an electrophysiological method, if possible.