 For this reason, it has been used as a model to study pathological conditions such as apnea of prematurity and sudden infant death syndrome.The region is named after the Silvaner (Boetzinger) variety of wine, served at the conference at which the region was named.The pre-Bötzinger complex (pre-BötC), a projection of the Botzinger complex, plays an important role in regulating respiration in mammals.