[Verse 1]
Deep inside the cortex where the pyramids reside
Two compartments working, soma and dendrite divide
Forward signals flowing through the bottom chamber's gate
While the apical branches calculate the error rate
No separate phases needed, just the biophysics dance
Local plasticity emerges from this neural stance
[Chorus]
Burst and spike together, multiplexing information
Event rate tells the story, burst rate shows deviation
Two-compartment model, encoding dual sensation
Forward flow and mismatch in one conversation
Gradient descent approximated, no external coordination
Dendritic rules emerging from cellular foundation
[Verse 2]
Somatic spikes are firing when the input patterns match
Regular rhythm pulsing through the neural dispatch
But when prediction fails and reality diverges wide
Apical dendrites trigger bursts that cannot hide
The mismatch signal travels through the branching tree
Teaching local synapses what they need to be
[Chorus]
Burst and spike together, multiplexing information
Event rate tells the story, burst rate shows deviation
Two-compartment model, encoding dual sensation
Forward flow and mismatch in one conversation
Gradient descent approximated, no external coordination
Dendritic rules emerging from cellular foundation
[Bridge]
Single spike train carrying double payload streams
Error correction woven into neural schemes
Calcium cascades trigger plastic change
Hebbian learning with a twist so strange
Burst-dependent plasticity rewrites the code
While forward activity stays in normal mode
[Verse 3]
No teacher signal needed from external source
Cortical columns compute their learning course
Pyramidal neurons with their dual design
Soma for the present, dendrites for decline
When expectations crumble and predictions fail
Apical bursts provide the corrective trail
[Verse 4]
Layer five neurons reaching through the cortical stack
Feedback from above flows down the dendritic track
Top-down expectations meet the bottom-up flow
Creating learning signals only cells can know
Calcium threshold crossed when burst meets spike
Synaptic weights adjusting with precision-like
[Chorus]
Burst and spike together, multiplexing information
Event rate tells the story, burst rate shows deviation
Two-compartment model, encoding dual sensation
Forward flow and mismatch in one conversation
Gradient descent approximated, no external coordination
Dendritic rules emerging from cellular foundation
[Outro]
Distributed units calculating on their own
Local learning rules carved in neural stone
Two signals intertwined in elegant design
Cortical intelligence refined by decline