Perhaps you should try some spelling variations:
theory increased » the increased (Expand search), memory increased (Expand search), they increase (Expand search)
increased signal » increased spinal (Expand search), increased airway (Expand search), increased atrial (Expand search)
decrease theory » decrease their (Expand search), decrease the (Expand search), decreased memory (Expand search)
decrease strain » increase strain (Expand search), decreases pain (Expand search), decreased brain (Expand search)
strain decrease » strains increases (Expand search), stress decreases (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)

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

• Removing quotes may allow a broader search: (( decrease theory increased signal processing ) OR ( decrease strain decrease and decrease ))~.