This is key knowledge I think – if you want to understand the stroke syndromes and the different presentations then you need to understand the internal capsule and its importance
Here’s the reference for the paper on lacunes if you’re really keen:
Wardlaw JM. What Is a Lacune? Stroke. 2008 Oct. 27;39(11):2921–2922. PMID 18703799 (Free PDF)
And a German neurology blog does a good job in pointing out how the term “lacune” is used in multiple different ways, not just the way I describe it in the video.