Both tramadol and hydrocodone attach to receptors in your brain to change your perception of pain. However, tramadol also allows the chemical messengers norepinephrine and serotonin to remain available to your brain for a longer period. It is believed that this helps block pain signals in your spinal cord.
In cinematography, the Dutch angle is one of many cinematic techniques often used to portray psychological uneasiness or tension in the subject being filmed.
Dutch angle is accomplished by simply tilting the camera so the horizon is at an angle to the bottom of the frame of the shot. In this first example the Dutch Angle is slight but enough to give a different artistic perspective vs. the straight on shot so commonly used. Dutch Angle used in Photography.