Perhaps you should try some spelling variations:
friction decreases » fraction decreases (Expand search), friction decrease (Expand search), action decreases (Expand search)
decrease friction » decrease predation (Expand search), decreased production (Expand search), decreased functional (Expand search)
motor processing » motion processing (Expand search), color processing (Expand search), emotion processing (Expand search)
decreases motor » decreases mtor (Expand search), increases motor (Expand search), decreases food (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), _ decrease (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (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 friction decreases motor processing ) OR ( decrease of decrease to decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease friction decreases motor processing ) OR ( decrease of decrease to decrease ))*.