Article Figures & Data
Figures
- Fig 1.
An example of demarcation and tracing of three striatal regions of interest (caudate, putamen and globus pallidus) on a series of coronal images.
- Fig 2.
Scatter plots for two volumetric measures of three striatal regions of interest taken on 53 subjects 5 years apart. The lines indicate linear regression of adjusted volumes on age at time 1 (solid line) and time 2 (broken line). Observations at time 1 are represented by solid circles, and observations at time 2 by empty circles. Regional volumes are adjusted for the intracranial volume.
Tables
- TABLE
Cross-Sectional Age-Related Differences in Striatal Volumes Measured Five Years Apart
Nucleus Raw Volume Regression of ICV-Adjusted Volume on Age r12 Time 1 Time 2 Time 1 Time 2 Mean SD CV Mean SD CV Slope SE rage Slope SE rage Caudate 9.42 1.14 0.12 9.00 1.09 0.12 −.031 .010 −.41 −.034 .009 −.47 .95 Putamen 10.41 0.98 0.09 10.01 1.02 0.10 −.030 .008 −.46 −.033 .008 −.49 .89 Globus Pallidus 2.16 0.27 0.12 2.10 0.27 0.13 .004 .002 .22 .004 .002 .21 .93 Note.—CV (coefficient of variation) is a ratio of standard deviation (SD) to the mean. The regression slopes are unstandardized regression coefficients measured in cc/year. SE is standard error of slope. All coefficients for the caudate nucleus and putamen are significantly different from zero, whereas those for the globus pallidus are not. The differences in slopes between the neostriatum (caudate and putamen) and paleostriatum are statistically significant (p < .05). Correlations are Pearson product moment coefficients. All correlations r > .23 are significantly different from zero.
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