Perhaps you should try some spelling variations:
during depressed » during depressive (Expand search), during repressive (Expand search), feeling depressed (Expand search)
decrease signal » increased signal (Expand search), decrease stigma (Expand search), decrease renal (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
depressed toc » depressed to (Expand search), depressed the (Expand search), depressed towns (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (Expand search)
the decrease » to decrease (Expand search), and decrease (Expand search), _ decrease (Expand search)
toc decrease » to decrease (Expand search), not decrease (Expand search), of 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 the decrease signal processing ) OR ( decrease during depressed toc decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease the decrease signal processing ) OR ( decrease during depressed toc decrease ))*.