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Fig. 8 | The Journal of Physiological Sciences

Fig. 8

From: Cerebral blood flow regulation and cognitive function: a role of arterial baroreflex function

Fig. 8

The relationship between baroreflex sensitivity and brain white matter neural fiber integrity. a Reduced baroreflex sensitivity is associated with lower fractional anisotropy (FA) and higher radial diffusivity (RD) in older adults, regardless of their cognitive status. FA provides a summary measure of axonal fiber tract integrity whereas RD reflects axonal demyelination. b BRS calculated during hypotension (top) showed a stronger relation with FA and RD than that during hypertension (bottom). Color bar shows the directionality of correlation and the magnitude of P value. The color in brain maps represent the statistically significant areas that are associated with BRS [6]. MCI mild cognitive impairment (color figure online)

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