Este artigo está licenciado sob uma licença Creative Commons Atribuição 4.0 Internacional, que permite uso irrestrito, distribuição e reprodução em qualquer meio, desde que a publicação original seja corretamente citada. Abstract: Epistemic foundationalism claims that there is a category of beliefs, the basic beliefs, able to stop adequately the justification chain. Taking perceptual beliefs, the epistemic regress goes back up to find a belief whose justification depends on the very perceptual experience. The underlying idea is that beliefs grounded or based on perception are justified and constitute cases of knowledge in virtue of this ground or base. Following Audi and Huemer, the problem we aim at discussing is how perception provides access to the external world and how perception yields justification for beliefs about the external world.