[Verse 1]
Eighteen-eighty, a doctor named Jackson
Watching a seizure crawl hand into shoulder
Cephalocaudal — that's head down to toe —
the spasm marched south like soldiers in rows
He mapped the jolt and he found something golden:
the brain stacks commands like a building, floor-olden
Top gives the order, the bottom obeys
Jackson's twitching patients lit up the hierarchy's maze
[Chorus]
Top floor plans it — strategy's throne,
basal ganglia and cortex call it home
Middle floor shapes it — tactics unfold,
motor cortex and cerebellum, sequence told
Ground floor hands it — execution's the deal,
brainstem and spinal cord make the motion real
Plan it, shape it, hand it down the line,
that's the ladder wired through your spine
[Verse 2]
Strategy's a boardroom hushed and deciding
Should I reach for coffee, or keep on hiding?
Association cortex weighs the whole scene
Basal ganglia picks the winning routine
It's not about muscles, it's about the "why"
A goal gets chosen before you even try
[Verse 3]
Tactics takes that goal and starts translating
Motor cortex sketches the arm's migrating
path through space, a trajectory drawn
Cerebellum times it like a metronome at dawn
correcting, predicting, smoothing every curve
so your reach stays steady, won't wobble or swerve
[Verse 4]
Execution's the floor where the real work happens
Spinal cord and brainstem, the hierarchy's workmen
They fire the neurons, they pull on the thread
muscles contract and the motion is bred
No thinking required, just the pattern's command
reflex and rhythm, the body's own band
[Bridge]
But don't be fooled, it's no strict one-way street —
levels run parallel, loops incomplete
Feedback climbs upward, polysynaptic and quick,
synapse chained to synapse, a relay-race trick
Spinal cord whispers back up to the brain,
cortex keeps listening, again and again
[Verse 5]
Damage up top and the symptoms turn subtle,
lesion down low and you lose the whole struggle
Hierarchy tells us right where the wound hides,
Babinski sign when the cortex's inside
Neurology reads the whole body like a map,
tracing the break in the hierarchy's lap
[Chorus]
Top floor plans it — strategy's throne,
basal ganglia and cortex call it home
Middle floor shapes it — tactics unfold,
motor cortex and cerebellum, sequence told
Ground floor hands it — execution's the deal,
brainstem and spinal cord make the motion real
Plan it, shape it, hand it down the line,
that's the ladder wired through your spine
[Outro]
So we start where the wiring's plain and raw,
spinal cord first, obeying the law
Then up to cortex, where sequences bloom,
then the loops that modulate, filling the room
Bottom to top and the loop back again,
that's the order we'll climb through the halls of the brain