Course

Primary motor cortex strokes — the ‘homunculus’, weakness patterns, and detection (Advanced)

Advanced course: how strokes affecting the motor strip produce specific weakness patterns (face/arm/leg), how this differs from internal capsule strokes, and how CT/MRI localize injury

FoundationsCaregiver, SurvivorAdvanced35 minPlain (6–8)

Educational only

Educational only — not medical advice.

What you'll learn

  • Understand the motor cortex ‘map’ concept
  • Recognize how lesion location influences face/arm/leg weakness patterns
  • Differentiate cortical weakness from deep pathway (internal capsule) patterns
  • Understand how CT/MRI and vascular imaging help localize ischemic vs hemorrhagic injury

Practice check

Check your understanding

A few untimed questions. Pick an answer to see instant feedback, then continue to the next lesson.

0 of 3 answered

Question 1

1. The motor cortex has a rough body map, so different parts can affect different body regions.

Question 2

2. A cortical stroke may cause…

Question 3

3. A useful question is…