This thesis analysis how the Kulina people conceive the shamanic practice and thought. The Kulina are an ethnic group that speaks an Arawan language and lives by the River Purus and by the tributaries of the River Juruá, at Southwestern Amazon. It investigates how the shamanic bodies are produced and which fluxes pass by them. Based on the observation of the shamanic rites that take place in the Indian village, and on the description made by these specialists about the learning processes of the shamanic knowledge, this study tried to understand the main aspects of Kulina knowledge regarding the!relationship and forms of interaction between beings and worlds of the cosmos. In this sense, it tried to perceive the mechanisms through which the Kulina shamans carry out their specialty in the art of materializing knowledge, powers and relationships established in the otherworld. One category has proven to be essential in the shamanic practice, in the way the Kulina people conceive the relations intra and between worlds: the stone that the shamans keep inside their bodies. An investigation of the different fields of significance associated to this category took place, not only in the Kulina universe, but also through a vast region where materialization appears as an important phenomenon for the understanding of the shamanic knowledge. The results of this study were, above all, the apprehension of an exegesis of the difference, associated with the shamanic emphasis on materialization, as variations of body and world vibrations. Stabilization of bodies and worlds in certain frequencies is apprehended through transacted artefacts that constitute indexes of other possible frequencies, although in latency. Keywords: Kulina; shamanism; tobacco; songs; corporality; artifacts.