[Verse 1] In the back of your brain where the vision starts flowing V1's got a map that keeps perfectly showing Every point from your eye finds its place on the wall Neighbors stay as neighbors through cortical sprawl But this map's got a secret, a twist in its plan The fovea's blown up like a zoom-in span [Chorus] Retinotopic mapping, point to point it goes But cortical magnification, that's how the story flows Half of V1 devoted to ten degrees of sight Foveal cones packed so densely, they steal the spotlight bright Map it out, blow it up, central vision wins the prize That's why your periphery can't match your focused eyes [Verse 2] Hubel and Wiesel with their electrodes fine Traced the single units, mapped them line by line Optical imaging made the columns glow Two-photon calcium let the patterns show fMRI in humans matched the monkey's tale Magnification factors, precise without fail [Chorus] Retinotopic mapping, point to point it goes But cortical magnification, that's how the story flows Half of V1 devoted to ten degrees of sight Foveal cones packed so densely, they steal the spotlight bright Map it out, blow it up, central vision wins the prize That's why your periphery can't match your focused eyes [Bridge] When V1 gets damaged, vision disappears Scotomas prove the link through clinical years Midget cells oversample the central zone Filter-then-pool models, quantitatively shown The strongest evidence base the field has ever known From single cells to human brains, the patterns clearly shown [Verse 3] Acuity collapses as you move away From that precious center where the details stay Cortical real estate commands a hefty price Central ten degrees get the neural slice Pinwheels spinning, columns in their rows Following the blueprint that biology chose [Verse 4] Evolution shaped this neural architecture For reading faces, finding food for sure Sharp detail in the center, motion on the sides Cortical commitment where each function hides M squared per degree, the formula's clean Mathematical beauty in the vision machine [Final Chorus] Retinotopic mapping, point to point it goes But cortical magnification, that's how the story flows Half of V1 devoted to ten degrees of sight Foveal cones packed so densely, they steal the spotlight bright Map it out, blow it up, central vision wins the prize That's the cortical echo behind your seeing eyes
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