Post-Hoc Contrast for “Normal VTA/SN” MDD Subgroup (12 MDD Versus 12 Matched Controls).

Positive t values indicate FA values were elevated in MDD subjects relative to control subjects; negative t values indicate FA values were reduced in MDD subjects relative to control subjects. p values are reported uncorrected; symbols indicate significance and trends at the corrected threshold.
*p value met the corrected threshold.
†p value was within an order of magnitude of the corrected threshold (a trend).
Abbreviations: R: right hemisphere; L: left hemisphere; wm: white matter; MFB: medial forebrain bundle; LNH: lateral nucleus of the hypothalamus; ACC anterior cingulate cortex; PAC: paracingulate cortex.

t值为正表示重度抑郁症（Major Depressive Disorder, MDD）受试者的各向异性分数（Fractional Anisotropy, FA）较对照组升高；t值为负则表示MDD受试者的FA值较对照组降低。
p值未进行校正；文中符号代表经校正阈值后的显著性与趋势水平。
*：p值达到校正阈值。
†：p值处于校正阈值的一个数量级范围内（即趋势性差异）。
缩写说明：R：右侧大脑半球（right hemisphere）；L：左侧大脑半球（left hemisphere）；wm：白质（white matter）；MFB：内侧前脑束（medial forebrain bundle）；LNH：下丘脑外侧核（lateral nucleus of the hypothalamus）；ACC：前扣带回皮层（anterior cingulate cortex）；PAC：扣旁皮层（paracingulate cortex）