Does (supra)gastric belching trigger recurrent hiccups?

Figure 2 Combined impedance and perfusion manometry. A: Pressure tracings from 31-36 min during spontaneous onset of a hiccup attack at time 33:20 min; B: Combined impedance and manometry of a zoomed in segment of Figure 2A shows that the hiccup episodes are preceded by 2 gastric belches and high pressure simultaneous, repetitive contractions; C: Another zoomed in segment of Figure 2A shows that hiccups are accompanied by sharp positive pressure peaks in the lower oesophageal sphincter and stomach, and by negative peaks in the oesophagus. The upper border of the lower oesophageal sphincter (LOS) was located at 51 cm from the nostrils.