An immunohistochemical study revealed CGRP-ir fibres in the vicinity
of the neurons of the sphenopalatine ganglia (SPG), and CLR
and RAMP-1 immunoreactivity in the SGCs (Csati et al., 2012b). It
is presumed that the sensory system influences the parasympathetic
cranial ganglia, e.g. the SPG, during the activation of the TS (Csati
et al., 2012b).