Perhaps you should try some spelling variations:
decrease ratio » decreased ratio (Expand search), decrease at (Expand search), decreased rate (Expand search)
ratio decrease » rate decrease (Expand search), rapid decrease (Expand search), ratio increase (Expand search)
eeg processing » egg processing (Expand search), log processing (Expand search), vog processing (Expand search)
decrease eeg » decrease treg (Expand search), decrease need (Expand search), decrease cell (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.

• Removing quotes may allow a broader search: (( decrease ratio decrease eeg processing ) OR ( decrease to decrease OR decrease ))~.