[Effective bibliographic search. Internet and neurology. Cochrane Collaboration].

The development of communication and the possibility of its dissemination to the biomedical documentation by means of the Internet network are producing changes in the traditional way of conceiving scientific publications. Two initiatives, derived from this new framework, are analyzed in this article. These are the Pubmed Central, the initiative of NCBI, intended to create a reservoir of biomedical literature, with free access, on-line, and the Cochrane Library which, through its different databases, is aimed at offering practitioners reasonable replies to frequent clinical questions. A new model of clinical documentation is arising from a combination of both: on the one hand, rational indexing and accessibility of the literature, and on the other, the analysis of information produced to generate relevant clinical knowledge.