[Verse 1] Doeller drops the paradigm, two-thousand-ten, Virtual arena, watch the runner spin, Six-fold modulation, hexadirectional wave, Sinusoid signal from the entorhinal cave, Running direction plotted against the grid's own face, Isotropic peaks, evenly spaced, But circular logic is the pitfall to dodge— Split your data, test it on a different lodge, Fmri's blurry, voxels blend the code, Proxy for the grid, not the neuron's abode. [Chorus] Six directions, c'est le rythme du grid, Dans ma tête, une carte qui vit, Hexadirectional, ma boussole en tête, Mesure l'espace, mesure la tête, Grid dans le cortex, code de position, Chante avec moi cette équation. [Verse 2] Jacobs, twenty-thirteen, wires in the brain, Epilepsy patients, electrodes for the game, Intracranial, no proxy, no guess, Single units firing hexagons, no less, Push a joystick through a small virtual town, Grid cells firing where the hex lines crown, Direct evidence now, the ceiling's the floor, Human entorhinal grids confirmed for sure. [Verse 3] Crank the tesla, seven strong, resolve the seam, alEC handles object, what you've seen, pmEC's the compass, where you've been, Anterior-lateral versus posterior-medial twin, Gradient mirrors hippocampus' long axis line, What and where, divided by design. [Chorus] Six directions, c'est le rythme du grid, Dans ma tête, une carte qui vit, Hexadirectional, ma boussole en tête, Mesure l'espace, mesure la tête, Grid dans le cortex, code de position, Chante avec moi cette équation. [Verse 4] Virtual water maze, platform hides unseen, Triangle completion—walk the outbound seam, Two legs traveled, point back to the start, Path integration, dead reckoning art, Loop closure, Stangl eighteen, wander the ring, Drift in your vector says something's off within, Four Mountains Test recalls the landscape whole, Object-location binding ties the what to the goal, Sea Hero Quest, millions steering through the fog, Veridical estimate—how true's your inner log. [Bridge] Design it clean: two patients, different scar, One's entorhinal, one's hippocampal far, Give both the triangle, give both the mountain view, If grid is broken, path integration's askew, But landmark memory in that patient still holds true— Hippocampal damage flips the deficit through: Place recall crumbles, yet the vectors stay construed, Double dissociation—now the mechanism's construed. [Outro] Six directions, c'est le rythme du grid, Mesure l'humain, mesure ce qui vit, Hexadirectional—chante-le encore, EC dans la tête, c'est notre trésor.
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