The relationship between base and object in Impulses is built from a precise adjustment, in which the cement structure molds itself to the shape of the stone, like a negative that shelters it. This method, which avoids imposing a previous design on the material, demonstrates the artist's interest in highlighting the natural qualities of the material. The series dialogues directly with public works such as Parque das cores do escuro [Park of the Colors of the Dark] (2002), in Ibirapuera Park, in São Paulo, where Amelia also explores the idea of bringing to the surface what was hidden inside the Earth, establishing a continuity between artistic gesture, raw material and urban space.