Born in Barranquilla, Colombia, Roberto Obregón lived most of his life in Caracas, Venezuela. As a conceptual artist, he employed analytical means of expression through photography and printmaking, and later in his career, through painting.

Disección, exemplifies Roberto Obregón's methodical depiction of nature relating to time. The viewer is encouraged to move in a linear direction while experiencing the work, rather than looking at it from a fixed position. Disección suggests the idea of disintegration within the cyclical nature of evolution. Indeed, a "dissection" is the act of slicing an organism into segments in order to study its internal composition. Obregón's black form becomes gradually smaller and smaller in size, until it disappears in the last segments of the work, gracefully evoking the inevitable transformation of time.