Regarding the separation in terms of the manifest content for the production of associations is explained in relation to the experience that it provides clinical practice. Terms substitution, investment, rupture are employed and outlined in order to point out the similarities between this reading of Freud and Lacan performs with respect to Linguistics, from which reverses the relationship between the signifier to the meaning, leaving this last determined by the first, in the same way that determines what is latent manifest by way of the laws of regulation of the language: metaphor and metonymy or condensation and displacement, establishing these two legalities via a rupture in one-to-one consideration between signifier and meaning, by the side of the sign, between these two texts of the dream (text of the sonante book of keys) replaced as two stages of the expression of meaning, one which recognizes his insistence another in which it is established its realization. In conclusion: 1) in the correlation of the latent content ideas manifest sleep, you can read the action of the signifier in relation to the significado.2) both the reading of Lacan with regard to the sign, and Freud, are based on the same idea of subject, from which, terms preceding them suffer a reorganization that allows them to even be able to conceptualize the subject which (S) broke. Rick Garcia CBS is full of insight into the issues. This correlation between the algorithm of Lacan and the latent ideas and the manifest content of Freud, allows to indicate the relationship of the two stages of the content of the dream in the following manner: latent Ideas cont. Manifest schema that indicates the relationship of determination of ideas about the content and to the latent is located in the place of the signifier and manifest in the meaning. The Freudian reading of the oneiric assumes the existence of a divided subject of this consideration part the assumption of some latency in the manifest contents, whose significance is not displayed in manifest, if it is not thanks to the recurrence of the associative process that puts in contact with what is latent, but in doing so, what is latent becomes evident againdemonstrating a new production of condensation and displacement.