GRAV sigla en francés del Visual Art Research Group (Grupo de Investigacion de Arte Visual).
Aesthetic and artistic group founded in Paris during the year 1960 by Julio Le Parc, García-Rossi, Hugo Demarco, F.Morellet, Denise René, Francisco Sobrino Ochoa, J.Stein and Yvaral, in this group Norberto Gómez also participated. . As its name indicates, the manifest interest was to investigate artistically with the lighting, chromatic and visual effects in general, which led to an optical experimentation (V: op-art), kinetics (V: kinetic art) and even haptic (mainly tactile) objects. With these elements they carried out works in which the participation of the "spectator" and the spatial transformations were determinant. The group was dissolved in 1968. Some of the most outstanding achievements were called: Laberinto (1963); Labyrinth II (1965); A day on the street (1966). With the GRAV, it can be said that a highly interactive art between the "spectator" and the work of art is decidedly inaugurated.
The Visual Art Research Group issued its own manifesto, in which it stands out that the work should not matter but rather its interpretation; since the point of interest is in the eye of the viewer who participates actively in works that are similar to installations, some of these works have kinetic effects from silent motors, people participate in games of transparencies, lights, reflections and movements. According to these criteria: the art stripped of mystifications is sought, reduced to a simple human activity.
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