Sentence:  The opening paragraph of the chapter titled The Theory Of Representative Perception , in the book Philosophies Of Science by Albert G. Ramsperger says , `` passed on to the <WSD>brain</WSD> , and there , by some unexplained process , it causes the mind to have a perception '' . 
Meaning of the word marked with <WSD> tags:  that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord