What Causes Sleep Talking And Night Terrors?

I have been experiencing sleep talking and sometimes terrors. My husband says like I am fighting with someone I take eltroxin for thryroid before bed But take Cymbalta 120 ,novospiroton 25mg bisoprolol, Rannidine150 mg I have had this for sometinme but lately more frequently and one night I bit my husband when he tried to wake me,because I thought he was pushing me under water