Sentence:  Hereby , the external object viewed by the eyes remains the thing that is seen , not the retinal image , the <WSD>purpose</WSD> of which would be to achieve perceptive cooperation by stirring sympathetic impulses in the other sensory centers , motor tensions , associated word symbols , and consciousness . 
Meaning of the word marked with <WSD> tags:  an anticipated outcome that is intended or that guides your planned actions