Skip to main content
. Author manuscript; available in PMC: 2016 Nov 15.
Published in final edited form as: Neuroimage. 2015 Aug 1;122:222–232. doi: 10.1016/j.neuroimage.2015.07.069

Figure 3. Pediatric head motion, n = 13 (7 males, mean age = 5.4 ± 1.6 years).

Figure 3

Head motion was measured in an MRI simulator. (A) Framewise displacement (FD) was calculated using an algorithm that quantifies relative displacement between each data point (Power et al., 2012). (B) A motion “spike” is a 2500ms time period with mean FD > 0.15mm. Both Inscapes and Fantasia were associated with significantly lower mean FD and lower number of spikes compared to Rest (p < 0.001). (C) The relationship between data yield and different motion cutoffs across the three conditions is shown. At a cut-off of 0.15 mm for each data point, 44% of the data can be kept from Rest, 77% from Inscapes and 79% from Fantasia.