Sentence:  In view of the important role which <WSD>emotional</WSD> disturbances play in the genesis of neurotic and psychotic disorders and the parallelism observed between autonomic states and psychological behavior in several instances , it is further suggested that a hypothalamic imbalance may play an important role in initiating mental changes . 
Meaning of the word marked with <WSD> tags:  any mental disorder not caused by detectable organic abnormalities of the brain and in which a major disturbance of emotions is predominant