Sentence:  Some investigators have found a parallelism between remissions and return of the sympathetic reactivity of the hypothalamus to the <WSD>normal</WSD> level as indicated by the Mecholyl test and , conversely , between clinical impairment and increasing deviation of this test from the norm . 
Meaning of the word marked with <WSD> tags:  conforming with or constituting a norm or standard or level or type or social norm; not abnormal