Is the pain in chronic pancreatitis of neuropathic origin? Support from EEG studies during experimental pain

Figure 4 The time evolution of amplitude distribution for delta and theta bands in patients and controls. Note the stable, monopolar spatial distribution of delta activity in controls (CD). This is due to constant and small phase differences between measurement channels. The theta activity in patients has slight changes in phase and, therefore, the spatial distribution is not always stable (see arrows). PD: Patients delta; PT: Patients theta; CD: Controls delta; CT: Controls theta.