Otorrinolaringología Monterrey - Dra. Lilia Ruan

29/09/2025

28/09/2025

A few days ago, we reviewed the anatomy of the basal ganglia. Let's use that knowledge to study lesions of the subthalamic nucleus, which affect the function of basal ganglia.

The subthalamic nucleus assists the basal ganglia in the regulation of movements by exciting the globus pallidus internus, which inhibits the thalamus.

The subthalamic nucleus receives most of the blood from small penetrating arteries of the middle cerebral arteries called the lenticulostriate arteries and small branches from the posterior circulation. Due to the small size of these arteries, they're prone to blockage, especially when there's hypertension or diabetes. Strokes occurring from these small arteries are called lacunar strokes.

Logically, if the subthalamic nucleus is damaged, the golbus pallidus stops inhibiting the thalamus, which leads to overstimulation of the motor cortex known as hemiballismus.

Hemiballismus usually presents as the sudden, involuntary, and large amplitude flailing of one or both extremities on the side of the body that is contralateral to the side of the lesion.

23/09/2025

Tx perdida auditiva

14/09/2025

Pac tigres gad excelente cirugía..TIGRES UANL

09/09/2025

Dispepepcia funcional

06/09/2025

Check out this open access article from our very own Journal of Vestibular Research addressing clinical characteristics of probable vestibular migraine https://journals.sagepub.com/doi/10.1177/09574271251324457

06/09/2025

New work from Chen et al. demonstrates that vestibular hair cells might be able to be protected from aminoglycoside induced vestibulotoxicity: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0320634

06/09/2025

Yoon and colleagues investigated the use of steroid therapy in South Korea in those with vestibular neuritis. Check out their work here: https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2025.1560388/abstract