A diagram that shows the potential peripheral events in migraine: Parasympathetic Activation. It shows the activation of the TNC per se also may produce vasodilation of meningeal vessels through a pathway originating from the SSN (SSN) and the perception of pain is mediated by higher-order projections from the Tnc (F). The diagram is divided into two sections. On the left side there is a title that reads "Potential Peripheral Events in Migraine: parasympathetic Activate" and on the right side it explains the concept of the activation. In the center of the image there are two red and green arrows pointing towards the TNG (TNG) and sing (sing) vessels which are connected by red and blue lines. These arrows represent the connections between the two vessels. The red arrows indicate the flow of blood from the sing vessel to the SNN vessel while the blue arrows represent sing vessels. There is also a label on the bottom right corner that says "Adapted with permission from goosy P.J. and N.J."

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