Yayoi has had an enormous and far reaching effect on the global art world and this impact can be seen in the younger generation of illustrative artists like Takashi Murakami who mimic her surreal pattern based works. Her battle with a hallucinatory condition since she was young has definitely shaped and informed her art and it could be said that her work is in fact the method of choice to stave off madness.
Yayoi Kusama's work has influenced my work primarily by her use of mostly monochromatic colour schemes. Many of her paintings and installations consist of two colours and usually a black or a white combined with a red or orange or yellow. These austere choices of colour produce a directness and when used with mirrors produce a hypnotic sense of "graphic endlessness" or infinity.
Personally i think by painting infinity she attempts to quell her fears of mortality but there is no doubt that her creativity has changed the way we see our world today. That is the amazing power of art! I admire Yayoi's tenacity in the face of daily adversity and the way she has produced something significant for the common good. There is plenty of information online about her and i encourage you to check her out.