The “Hospital of Emotions” is an immersive art experience that explores different facets of being human inside the long-shuttered St. Vincent Medical Center near downtown Los Angeles. But until the end of September, the hospital rooms are filled with 80 installations by 70 artists. As in Pixar’s “Inside Out,” color-coded creatures sprinkled throughout the show personify a range of emotions from joy and hope to anger and sadness. The work was also informed by Ling’s experience as a child spending 10 days in the hospital with a fever. “Even amongst moments of sadness you can still experience joy, it’s not like an isolated experience where you have to get through the sadness to experience joy, right?