The Cerebellum
80% of all brain neurons. Coordinates thinking, memory, emotions — not just movement.
Why the Cerebellum Matters
- Contains 80% of all brain neurons
- Coordinates timing and sequencing of cognitive tasks
- When it fails, everything downstream fails
- Standard MRI shows structure — not function
- Your scan is "normal" but your wiring is loose
Signs of Cerebellar Dysfunction
- Brain fog worse in the afternoon than morning
- Balance or coordination problems (even subtle)
- One side of body feels different from the other
- Eye strain or visual fatigue with screens
- Sound or light sensitivity that wasn't always there
- Can't stand on one leg for 10 seconds
The 4-Stage Model
- Disconnection — Pathways weakened but intact
- Dysregulation — Systems compensating but straining
- Dysfunction — Measurable performance decline
- Degeneration — Structural changes visible on imaging
Stages 1-2 are fully reversible with targeted intervention. Early action matters.
What to Do
- Brain Self-Tests — Identify your affected side
- Brain Exercises — Figure-of-eight, VOR training
- Brain Fuel — Ensure the brain has energy before exercising
Reference: Schmahmann JD & Sherman JC, Brain, 1998 — cerebellar cognitive affective syndrome