Figure 4 - Transcranial magnetic stimulation (TMS) topographic maps superimposed on MRI images.

The maps show the size of pharyngeal cortical representation during recovery of a dysphagic patient from stroke. The patient had a left hemisphere cortical stroke affecting the lower sensorimotor cortex and recovered functional swallowing by 1 month. The unaffected hemisphere is shown to have an increasing representation during recovery, whereas that of the affected hemisphere exhibits little change. (Source: Hamdy et al.⁶⁵ with permission from the American Gastroenterological Association.)