Testing for difference between two groups of functional neuroimaging experiments |
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| Abstract | We describe a meta-analytic method that tests for the difference between two groups of functional neuroimaging experiments. We use kernel density estimation in three-dimensional brain space to convert points representing focal brain activations into a voxel-based representation. We find the maximum in the subtraction between two probability densities and compare its value against a resampling distribution obtained by permuting the labels of the two groups. As such it appears as a general method for comparing the local intensity of two non-stationary spatial point processes. The method is applied on data from thermal pain studies where "hot pain" and "cold pain" form the two groups. |
| Keywords | Neuroinformatics, kernel density estimation |
| Type | Conference paper [Without referee] |
| Conference | |
| Year | 2004 Month August |
| Publisher | DIKU |
| Address | Copenhagen |
| Electronic version(s) | [pdf] |
| Publication link | http://www.imm.dtu.dk/~fn/Nielsen2004Testing.html |
| BibTeX data | [bibtex] |
| IMM Group(s) | Intelligent Signal Processing |