Altered States looks at contemporary artists who explore psychedelia (mostly painting and some constructions with a mix of figuration, geometric and Op imagery) against a back drop of 1960s Op Art, figurative and Color Field paintings, as well as original rock posters from concerts at the Fillmore West, Avalon Ballroom and other San Francisco venues to set the stage and create the mood. Psychedelia, influenced by surrealism, visual perception and Op Art along with others such as Art Nouveau, Indian textiles and Pop Art defined the 1960s and Counter Culture movement and was ever present in rock culture on album covers, poster art and light shows as the back drop for concerts.