@ARTICLE\{IMM2005-03661,
    author       = "F. {\AA}. Nielsen and D. Balslev and L. K. Hansen",
    title        = "Mining the posterior cingulate: Segregation between memory and pain components",
    year         = "2005",
    month        = "jun",
    keywords     = "text mining, neuroimaging, magnetic resonance imaging",
    pages        = "520-532",
    journal      = "NeuroImage",
    volume       = "27",
    editor       = "",
    number       = "3",
    publisher    = "Elsevier",
    note         = "Submitted in 2004 July, accepted 2005 April 22. The {PDF-}file here is the submitted version. It differs a bit compared to the final printed version. Look at the Elsevier publisher's homepage or email fn@imm.dtu.dk for a copy of that version.",
    url          = "http://www.imm.dtu.dk/~fn/Nielsen2003Posterior-full.html",
    abstract     = "We present a general method for automatic meta-analyses in neuroscience and apply it on text data from published functional imaging studies to  extract main functions associated with a brain area --- the posterior cingulate cortex. Abstracts from PubMed are downloaded, words extracted and converted to a bag-of-words matrix representation. The combined data is analyzed with hierarchical non-negative matrix factorization. We find that the prominent themes in the {PCC} corpus are episodic memory retrieval and pain.  We further characterize the distribution in {PCC} of the Talairach coordinates available in some of the articles. This shows a tendency to functional segregation between memory and pain components where memory activations are predominantly in the caudal part and pain in the rostral part of {PCC}."
}