Research Article

Cognitive Intraindividual Variability and White Matter Integrity in Aging

Table 6

Correlations between AD in the JHU-ROIs and cognitive measures.

JHU-ROIsCrossSquareLetterCompvWMsWMint
iMiSDiMiSDiMiSDiMiSDiMiSD

Left ATR .13.53 ** .41 * .58 ** −.06−.10−.03.28.24−.12
Right ATR .17.48 * .41 * .58 ** −.11−.06−.20.17.26.00
Left CS−.12.01.38.24−.07−.22−.04−.23.00.02
Right CS−.09−.13.15−.03−.12−.11−.09−.48 * −.08−.05
Left CC −.31−.16−.15−.03−.19−.11−.03.12−.33−.15
Right CC−.22−.11−.17.00−.42 * −.20−.09.06−.25.20
Left Cing_h−.21−.19.04−.13−.32.02−.04−.16−.28−.14
Right Cing_h−.17−.12.21.22−.34−.16−.12−.23.05.01
Forceps major−.01.08−.11−.14−.35−.06−.21−.23−.06.13
Forceps minor−.08−.19.15.10−.29−.21.07−.13−.16−.13
Left IFO−.22.02.08.19−.43 * −.25.01.18−.06−.09
Right IFO−.23−.11.03.06−.46 * −.25−.05−.12−.11.06
Left ILF−.22−.14.06.09−.45 * −.20.02.03−.12.00
Right ILF−.16−.37−.05−.16−.42 * −.20.10−.20−.33−.11
Left SLF .03.42 * .35.58 ** −.29−.17−.17.27.29.01
Right SLF−.13.18.16.33−.44 * −.10.01.03.18−.12
Left UN.12.12.17.19−.50−.34−.23.01−.20−.20
Right UN−.03.06.16.25−.31−.44 * −.15−.08−.10.22
Left SLF_t−.25−.16.08−.10−.54 ** −.04−.08−.08−.06.02
Right SLF_t−.25−.10.05.09−.39−.11.10−.09−.22.06
Mean AD−.11.12.21.28−.45 * −.21−.12−.02−.03−.01

ATR: anterior thalamic radiation L; CS: corticospinal tract; CC: cingulum/cingulate gyrus; Cing_h: cingulum/hippocampus; IFO: inferior fronto-occipital fasciculus; ILF: inferior longitudinal fasciculus; SLF: superior longitudinal fasciculus; UN: uncinate fasciculus; SLF_t: superior longitudinal fasciculus temporal part; iM: individual mean; iSD: individual standard deviation; FA: fractional anisotropy. Tracks in italic are those showing a significant age effect.
; ** .