Recent studies suggest that calcitonin gene-related peptide (CGRP) neurons in the parabrachial nucleus (PBN) represent aversive information and signal a general alarm to the forebrain. If CGRP neurons serve as a true general alarm. their activation would modulate both passive and active defensive behaviors depending on the magnitude and context of the threat. However. https://www.bekindtopets.com/great-pick-Nobivac-Feline-1-HCPCh-special-find/