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. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Neuroimage. 2012 Sep 14;64:671–684. doi: 10.1016/j.neuroimage.2012.09.004

Table 8.

List of 10 most significant age-related increases and 10 most significant age-related decreases in proportional fiber density when age is examined alone. When only one region is listed, an age-related increase or decrease in the proportion of fibers going through that node was found.

Top 10 increases in fiber density
Connection b-val
L Supramarginal × L Inferior Parietal −0.000358
R Caudal Middle Frontal −0.000347
L Lateral Orbitofrontal × L Rostral Mid Frontal −0.000255
L Med Orbitofrontal × L Rostral Mid Frontal −0.000314
L Postcentral × L Insula −0.000276
L Insula × L Supramarginal −0.000429
L Inferior Parietal −0.00108
L Supramarginal × L Posterior Cingulate −0.000296
L Sup Frontal × L Rostral Mid Frontal −0.000483
R Sup Frontal × R Rostral Ant Cingulate −0.000309
Top 10 decreases in fiber density
Connection b-val
L Posterior Cingulate 0.00337
L Paracentral × L Posterior Cingulate 0.00143
L Posterior Cingulate × L Precuneus 0.000967
L Posterior Cingulate × L Sup Frontal 0.000999
R Postcentral × R Insula 0.000593
L Isthmus of the Cingulate 0.00277
R Postcentral 0.000956
L Sup Frontal × R Prefrontal 0.000168
L Isthmus of the Cingulate × L Precuneus 0.00176
L Caudal Ant Cingulate × L Sup Frontal 0.00101