A new meta-analytic method for neuroimaging studies that combines reported peak coordinates and statistical parametric maps - 30/10/12
, D. Mataix-Cols a, M.L. Phillips c, d, W. El-Hage e, D.M. Kronhaus f, N. Cardoner g, S. Surguladze a, f| páginas | 7 |
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Abstract |
Meta-analyses are essential to summarize the results of the growing number of neuroimaging studies in psychiatry, neurology and allied disciplines. Image-based meta-analyses use full image information (i.e. the statistical parametric maps) and well-established statistics, but images are rarely available making them highly unfeasible. Peak-probability meta-analyses such as activation likelihood estimation (ALE) or multilevel kernel density analysis (MKDA) are more feasible as they only need reported peak coordinates. Signed-differences methods, such as signed differential mapping (SDM) build upon the positive features of existing peak-probability methods and enable meta-analyses of studies comparing patients with controls. In this paper we present a new version of SDM, named Effect Size SDM (ES-SDM), which enables the combination of statistical parametric maps and peak coordinates and uses well-established statistics. We validated the new method by comparing the results of an ES-SDM meta-analysis of studies on the brain response to fearful faces with the results of a pooled analysis of the original individual data. The results showed that ES-SDM is a valid and reliable coordinate-based method, whose performance might be additionally increased by including statistical parametric maps. We anticipate that ES-SDM will be a helpful tool for researchers in the fields of psychiatry, neurology and allied disciplines.
El texto completo de este artículo está disponible en PDF.Keywords : Meta-analysis, Neuroimaging, Peak coordinate, Signed differential mapping, Statistical parametric map
Esquema
Vol 27 - N° 8
P. 605-611 - novembre 2012 Regresar al númeroBienvenido a EM-consulte, la referencia de los profesionales de la salud.
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