Perhaps you should try some spelling variations:
visual processing » signal processing (Expand search), minimal processing (Expand search), digital processing (Expand search)
decrease lesions » disease lesions (Expand search), decreased response (Expand search), decrease adhesion (Expand search)
decrease theory » decrease their (Expand search), decrease the (Expand search), decreased memory (Expand search)
theory decrease » the decrease (Expand search), therapy decreases (Expand search), memory decreases (Expand search)
decrease visual » decreased visual (Expand search), decrease visceral (Expand search), decreases visceral (Expand search)
lesions case » lesion case (Expand search), lesions caused (Expand search), lesions based (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)
case and » cases and (Expand search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease theory decrease visual processing ) OR ( decrease lesions case AND decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease theory decrease visual processing ) OR ( decrease lesions case and decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease theory decrease visual processing ) OR ( decrease lesions case and decrease ))*.