Perhaps you should try some spelling variations:
fear processing » pear processing (Expand search), fur processing (Expand search), after processing (Expand search)
decreased fear » decreased heart (Expand search), decreased mean (Expand search), decreased after (Expand search)
any decreased » and decreased (Expand search), any decrease (Expand search), are decreased (Expand search)
decrease any » decreases and (Expand search), decreased and (Expand search), decreased ant (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), the decrease (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (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 any decreased fear processing ) OR ( decrease NOT decrease AND decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease any decreased fear processing ) OR ( decrease not decrease and decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease any decreased fear processing ) OR ( decrease not decrease and decrease ))*.