Movement Disorders
Basal ganglia loop explorer
Compare direct release, indirect suppression, and hyperdirect stopping so learners can explain bradykinesia, freezing, chorea, and dyskinesia as circuit problems rather than as memorized disease labels.
Teaching presets
Start from a circuit phenotype, not a diagnosis label
The loop is most teachable when learners compare a balanced gate, dopamine depletion, freezing-prone overbraking, medication rescue, dyskinetic overshoot, and indirect-pathway collapse side by side.
A reference loop where direct release, indirect suppression, and rapid stopping stay in reasonable balance.
Use this baseline before teaching pathology so learners can see that basal ganglia circuitry is about selecting and scaling movement, not simply turning movement on or off.
This is a teaching baseline, not a claim that healthy motor control is static or context-free.
Loop map
Direct, indirect, and hyperdirect competition
Baseline comparison
Normal versus current gate balance
Each bar compares the current loop against the balanced teaching baseline so learners can see which part of the circuit has drifted most.
Motor envelope
What the learner should expect at the bedside
The loop matters clinically only when it changes movement grammar: vigor, stability, cue response, freezing, and hyperkinetic spill.
Loop state
Balanced loop competition with usable thalamic release
Direct facilitation, indirect suppression, and hyperdirect stopping remain close enough to keep thalamic release available without spilling into uncontrolled movement.
Movement vigor
57%
How easily the loop can scale and release the selected movement.
Pallidal brake
33%
Higher values mean GPi/SNr output is keeping the thalamus more tightly inhibited.
Thalamic release
67%
The usable output gate back to cortex and gait-related motor programs.
Cue leverage
23%
How much external rhythm or structure should rescue movement release.
Freezing risk
16%
Conflict-sensitive initiation failure driven by overbraking rather than weakness.
Dyskinesia risk
7%
How close the loop is to overshooting into medication-linked hyperkinetic spill.
Strongest localization
Circuit before syndrome label
Healthy cortico-striato-pallido-thalamo-cortical competition with enough brake to suppress noise but enough release to scale movement.
Bedside grammar
What the movement should look like
- Self-initiated and externally cued movement are both available.
- Stopping is possible without the gait collapsing into freezing.
- Unwanted movement is contained without excessive rigidity or hypokinesia.
Differential traps
What this loop state does not mean
- A normal loop does not look purely cerebellar, pyramidal, or sensory because no single failure mode dominates the pattern.
- The key teaching move is to compare pathology against this baseline rather than memorizing separate disease lists.
Teaching pearls
The professor version
- Direct and indirect pathways are partners, not enemies: one releases the chosen program while the other suppresses competitors.
- The hyperdirect route matters most when the learner has to explain fast stopping, conflict, or turning hesitation.
Next questions
High-yield follow-up probes
- What changes first when dopamine falls: movement vigor, cue dependence, or suppression of unwanted movement?
- Which bedside task exposes hyperdirect braking better: straight walking, turning, or dual-task gait?
Continue the loop
Use this with dopamine, gait, anatomy, and tutoring
Dopamine Prediction Error Lab
Computational clinical neuroscience
Gait Pattern Localizer
Bedside gait localization
Motor Pathway Explorer
Clinical motor system localization
Brain Atlas
Post-clinical anatomical convergence
Neuro Tutor
Cross-module consult reasoning with explicit scoring
Teaching frame
Why this module belongs now
The app already teaches dopamine, gait, motor pathways, and brain localization. This module is the missing bridge that turns those surfaces into one movement-disorders reasoning sequence.