Figure 4. Correlations between somatosensory evoked potentials (SSEPs) and myelin water fraction (MWF) in patients with cervical spondylotic myelopathy (CSM) and healthy controls.

Correlations of tibial SSEPs (left and right) with dorsal column and whole cord MWF in participants with CSM (A–D) and healthy controls (E–H). Significant correlations are only found in the CSM group (trend lines are fitted R² and p value). No correlations are observed in healthy controls.