Before revision:  The recurrent projection provides a foundation for understanding the subjectivity and intentionality of consciousness and the relationships between original, conscious outcome and expression, and paves the way for scientific research involving consciousness .
After revision:  The recurrent projection provides a foundation for understanding the subjectivity and intentionality of consciousness and the relationships between original, conscious outcome and expression, and paves the way for scientific research on consciousness and facilitates the integration of humanities and natural science .