Perhaps you should try some spelling variations:
decreased survival » increased survival (Expand search), increases survival (Expand search), increase survival (Expand search)
survival patterns » spatial patterns (Expand search), survival after (Expand search), survival pathways (Expand search)
pain decreased » pain decrease (Expand search), in decreased (Expand search), brain decreases (Expand search)
decrease pain » decreases pain (Expand search), decrease in (Expand search), decreased brain (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » can increase (Expand search), and decrease (Expand search), to decrease (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease OR decrease can decrease ) OR ( decrease pain decreased survival patterns ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease OR decrease can decrease ) OR ( decrease pain decreased survival patterns ))*.