Perhaps you should try some spelling variations:
during depressed » during depressive (Expand search), during repressive (Expand search), feeling depressed (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
depressed ratio » decreased ratio (Expand search), depressed brain (Expand search), depressed to (Expand search)
ratio decrease » rate decrease (Expand search), rapid decrease (Expand search), ratio increase (Expand search)
decrease ictal » decrease fetal (Expand search), decrease total (Expand search), decreases rectal (Expand search)
ictal pattern » ictal patterns (Expand search), fractal pattern (Expand search), digital pattern (Expand search)

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

• Removing quotes may allow a broader search: (( decrease during depressed ratio decrease ) OR ( decrease OR decrease ictal pattern ))~.