[Verse 1]
In twenty-oh-eight, Hafting dropped the science clean
Phase precession in the grid without hippocampus seen
MEC cells firing early as the rat moves through the maze
Independent rhythm, breaking old neuronal ways
Theta waves cascading, no CA1 required
Grid cells keep their timing, perfectly inspired
Sixty hertz oscillations, phase advancing every stride
Entorhinal cortex proving it can navigate and guide
[Chorus]
From dorsal small to ventral wide, the gradient tells the tale
Grid spacing grows exponentially, a microscopic scale
Mixed selectivity hiding in the code we thought was pure
Supporting papers paint the picture, findings that endure
[Verse 2]
Brun and Solstad measured spacing coast to coast
Dorsal grids pack tight, but ventral grids can boast
Forty centimeter fields down where the cortex bends
Progressive increase documented, gradient never ends
Quantified the architecture, mapped it cell by cell
Dorsoventral axis holding secrets it can tell
Logarithmic expansion, geometric growth so clean
Most elegant brain organization ever seen
[Chorus]
From dorsal small to ventral wide, the gradient tells the tale
Grid spacing grows exponentially, a microscopic scale
Mixed selectivity hiding in the code we thought was pure
Supporting papers paint the picture, findings that endure
[Bridge]
Aronov shattered boundaries, sound frequency encoded
Grid-like place-like firing when pure tones exploded
Non-spatial dimensions mapped by hippocampal crew
Proving spatial circuits handle abstract landscapes too
[Verse 3]
Hardcastle revealed the truth we couldn't see before
Mixed selectivity neurons, not the pure cells we adore
Border, grid, and head direction blended in one cell
Multiplexed and heterogeneous, adaptive stories tell
Computational models showed the messy realistic view
Navigation isn't clean-cut like we thought we knew
Ganguli's mathematics proved the code is richly mixed
Challenging our textbooks, old assumptions now are nixed
[Verse 4]
Years of mapping neural pathways, thinking each was set
Single function doctrine, now we know we're not there yet
Grid cells in the darkness, sound cells in the maze
Plasticity and flexibility define the neural ways
Cross-modal integration weaving patterns yet unknown
Every new discovery shows the brain has grown
Beyond our simple models, beyond our neat design
Nature's computation far more complex by design
[Chorus]
From dorsal small to ventral wide, the gradient tells the tale
Grid spacing grows exponentially, a microscopic scale
Mixed selectivity hiding in the code we thought was pure
Supporting papers paint the picture, findings that endure
[Outro]
Four papers changed the game, each finding crystal clear
MEC complexity deeper than we knew throughout the years