Japanese artist Yayoi Kusama - who has notably lived in a psychiatric institution for the last four decades - has been obsessed with dots and infinity for her entire career, an inspiration she attributes directly to her hallucinations. In an attempt to share her experiences, she creates installations that immerse the viewer in her obsessive vision of dots or infinitely mirrored space.
Saw one of those in NYC a few months (?) ago. It was pretty awesome.