Neuroinformatics Definitions

Informatics
Research on, development of, and use of technological, sociological, and organizational tools and approaches for the dynamic acquisition, indexing, modeling, dissemination, storage, querying, retrieval, visualization, integration, analysis, synthesis, sharing (including electronic research collaborations), and publication of data and information such that economic and other benefits may be derived from them by users in all sectors of society. (OECD Megascience Forum; Biological Informatics Working Group, 1999)

Bioinformatics vs. Neuroinformatics
The complexity of the brain, and the quantity and complexity of the data derived from it in neuroscience, represent very substantial problems for brain science. Other biological disciplines, most celebratedly genomics and taxonomy, face similar problems of complexity, and have very productively brought computer-based collation, management and analysis to bear, in an approach called "Bioinformatics." Neuroinformatics brings computer-based collation, management and analysis to neuroscience data, with the aims of making the complex data tractable, and of bringing mathematical and computational rigour to those areas that have not previously benefitted from it. (Neural Systems Group, University of Newcastle, UK, 1999)

Neuroinformatics
Neuroinformatics (NI) is the area of science that combines brain and behavioral (clinical and basic) research with informatics research, leading to tools to better utilize brain and behavioral data. Neuroinformatics data are drawn from studies on the molecular,cellular, cellular systems and circuits, whole brain, and behavior levels of biological organization, of any species, across the life span and in normal and pathological conditions. (OECD Working Group in Neuroinformatics, 2000).
See also "Signal processing strategies in Neuroinformatics", the ICASSP'2000 tutorial on Neuroinformatics.