Perhaps you should try some spelling variations:
decrease firing » decrease during (Expand search), decreases during (Expand search), decreased during (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
firing pattern » firing patterns (Expand search), foraging pattern (Expand search), feeding pattern (Expand search)
decrease can » decrease and (Expand search), decrease at (Expand search), decrease on (Expand search)
can decrease » and decrease (Expand search), can increase (Expand search), to decrease (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain 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 can decrease their decrease ) OR ( decrease in decrease firing pattern ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease can decrease their decrease ) OR ( decrease in decrease firing pattern ))*.