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Subsequently, the derived normalization parameters from the mean EPI image, were applied to all EPI volumes, which were subsampled to a voxel size of 2?��?2?��?2?mm and smoothed with a Gaussian kernel of 6?mm FWHM. Statistical analysis was performed using the General Linear Model (Friston et al., 1995a?and?Friston et al., 1995b), by modeling each condition using a delayed boxcar function and by convolving this with the hemodynamic response function. Global signal intensity was normalized and an appropriate high-pass temporal filter (2 times the total duration of all different conditions in a run) was applied to remove low frequency drifts independent of stimuli-induced signal changes. The first level interactions between action and person were calculated for each individual subject. These contrast images http://www.selleckchem.com/products/Gefitinib.html were subjected to a second level, random-effects ANOVA analysis. These interactions were masked inclusively with the single effect of actor action compared to its controls (at p? http://en.wikipedia.org/wiki/NK_cells in interactions (see above). Activity profiles plot the MR signal changes relative to fixation, using fitted values (Marsbar), in percent of the average signal in the run. The profiles were calculated from the single subject data obtained by averaging all the voxels in the ROI. The first 5 data points within each block were not taken into account to compensate for the hemodynamic delay of the BOLD response. In all profiles the standard error (SE) of the mean was determined across the different subjects. The ROIs were defined by the whole brain interaction contrast, using all voxels reaching p? http://www.selleckchem.com/products/DAPT-GSI-IX.html Caret (Van Essen et al., 2001) as described for Experiment 1. Experiment 4 tests the interaction between person and action in human premotor cortex with the new stimuli for 3 different frame rates. It was similar to Experiment 3, except that three frame rates 14?f/s, 20?f/s and 28?f/s were compared. The 12 subjects participated in two sessions in each of which 9 runs were collected, yielding 6 runs for each rate. Sets of 6 runs with a given rate were presented in pseudorandom order across the two sessions (middle set spread over the sessions) to groups of two subjects. The random effects analysis used a small volume correction with the right phF5c site obtained in Experiment 3 (109?voxels centered on 48, 0, 48) as a priori ROI. A symmetrical ROI (109?voxels centered ??48, 0, 48) was used for the LH.