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. 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 4. Head motion outcomes, n = 22, healthy adults (12 males, mean age = 24.3 ± 5.1 years).

Figure 4

(A) Head motion was evaluated using an algorithm that quantifies the root mean square (RMS) of the relative framewise displacement (FD) between each volume of functional data (Jenkinson et al, 2002). Both Inscapes and Oceans were associated with significantly lower FDRMS than Rest (p < 0.05). (B) A motion “spike” is a volume with FDRMS > 0.15mm, and no significant differences were found across conditions in this sample. (C) At a threshold of FDRMS 0.15 mm for each data point, 95% of the data can be retained from Rest, 97% from Inscapes and 99% from Oceans. At a threshold of 0.10mm, both movies become significantly better than Rest (p<0.05) with regards to percent data retained.