Perhaps you should try some spelling variations:
response decreased » response decrease (Expand search), lesions decreased (Expand search), response increase (Expand search)
decrease response » decreased response (Expand search), increased response (Expand search), increases response (Expand search)
decreased brain » decreases brain (Expand search), increased brain (Expand search), decreased in (Expand search)
gas processing » images processing (Expand search)
brain decrease » brain decreases (Expand search), brazil decrease (Expand search), strain decrease (Expand search)
decrease gas » decrease at (Expand search), decrease its (Expand search), increase gas (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 _ decrease gas processing ) OR ( decrease response decreased brain decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease _ decrease gas processing ) OR ( decrease response decreased brain decrease ))*.