Do you know why bradycardia, rather than tachycardia in increased Intracranial Pressure?

 This is one type of ischemic CNS response 

 When intracranial pressure (CSF) is elevated, the blood flow to the VMC (vasomotor center) is reduced and local hypoxia and hypercapnia increase its discharge. 

 The resulting increase in systemic arterial pressure helps to restore blood flow to the medulla. 

This rise in blood pressure triggers a reflex decrease in the heart rate {reflex bradycardia) through arterial baroreceptors.

This is why bradycardia, rather than tachycardia, is usually seen in patients with elevated intracranial pressure.

And this response is called "Cushing's Reflex"