Fig. 3From: Microstructural changes in the trigeminal nerve of patients with episodic migraine assessed using magnetic resonance imagingPlots showing linear relationships between the left (grey shading) and right (black shading) total nerve volume, maximum cross-sectional area, fractional anisotropy, mean diffusivity, axial diffusivity and radial diffusivity in migraineurs with migraine duration, intensity and frequency. Note that there were no significant linear relationships. *p < 0.05Back to article page