Which vascular supply is responsible for manifestations such as vertigo, dysarthria, and contralateral pain during a stroke?

The manifestation of vertigo, dysarthria, and contralateral pain during a stroke can be attributed to the involvement of the vertebrobasilar arteries. These arteries supply blood to the posterior part of the brain, including the brainstem and cerebellum, which play critical roles in balance, coordination, and speech.

Vertigo arises from the dysfunction of the vestibular pathways, which can be impacted when the blood supply from the vertebrobasilar system is compromised. Dysarthria, characterized by difficulties in speech due to motor control issues, can result from a stroke affecting areas responsible for motor coordination in the brainstem or cerebellum. Additionally, contralateral pain may be observed due to disruption of sensory pathways that cross in the brainstem or at other locations. Thus, the symptoms reflect a range of functions linked to regions supplied by the vertebrobasilar arteries.

In contrast, the other vascular supplies mentioned, such as the posterior cerebral artery and the middle cerebral artery, have different areas of influence. The posterior cerebral artery primarily affects visual processing areas, while the middle cerebral artery largely supplies regions involved in motor function, language, and sensory processing but does not typically lead to the combination of symptoms stated. The anteromedial