Skip to main content
. Author manuscript; available in PMC: 2020 Mar 1.
Published in final edited form as: Neurosci Biobehav Rev. 2019 Jan 4;98:85–94. doi: 10.1016/j.neubiorev.2018.12.030

Table 3.

Summary of T-Tests Comparing Group Differences in Variability for Brain Structure Volume by Hemisphere

Laterality in Brain Structure Number of Samples Difference t p-value
Total Brain Volume 11 −0.012 −0.120 0.907
Total Gray Matter Volume 5 0.006 0.105 0.921
Lateral Ventricles 20 −0.034 −0.463 0.649
Gray Matter Frontal Lobe 8 −0.052 −0.498 0.634
Gray Matter Prefrontal Lobe 7 0.177 1.547 0.173
Gray Matter Temporal Lobe 9 −0.020 −0.199 0.847
Gray Matter Superior Temporal Gyrus 9 −0.067 −1.533 0.164
Hippocampus 66 −0.030 −1.089 0.280
Fusiform Gyrus 5 0.004 0.088 0.934
Planum Temporale 13 0.025 0.480 0.640
Insula 5 −0.092 −0.981 0.382
Caudate Nucleus 22 −0.003 −0.187 0.853

Note. One-sample t-test conducted on difference in exponentiated ratios of group standard deviations between left hemisphere and right hemisphere. Positive values indicate that left hemisphere volume shows larger group difference in variation than right hemisphere volume.