[Verse 1] When Ungerleider took his blade to monkey minds Cut the temporal stream, left the parietal behind What pathway broke, what pathway stayed intact? Remove a piece, observe the deficit exact Schiller split the magno from the parvo layers clean Motion died but color lived, proved channels aren't just seen [Chorus] Cut it out, watch what breaks That's the method old science makes Lesion tells you what's required Not the where, just what's desired Necessity's the only claim When you're playing the ablation game [Verse 2] Nature throws her own destructive dice around Stroke in V4, chromatic world shuts down Achromatopsia steals the rainbow's gift MT damage leaves you motion parallax drift Akinetopsia freezes life to still frames While fusiform lesions steal familiar faces' names [Chorus] Cut it out, watch what breaks That's the method old science makes Lesion tells you what's required Not the where, just what's desired Necessity's the only claim When you're playing the ablation game [Bridge] But here's the trap that catches eager minds The area you cut might just be roads and signs Could be input, could be relay station Not the place of computation Double dissociation's the golden key D.F. and optic ataxia set the circuits free [Verse 3] V1 vanishes, conscious sight goes black But blindsight proves unconscious processing tracks Prosopagnosia leaves you face-blind and confused Fusiform's necessity clearly well-perused Chemical or surgical, monkey or human brain The oldest method still breaks the cognitive chain [Verse 4] Transcranial magnets pulse and interfere Virtual lesions making neural functions disappear Millisecond timing shows the causal flow When disruption stops the cognitive show Pharmacological blocks at the synapse divide Show which transmitters let the signals ride [Chorus] Cut it out, watch what breaks That's the method old science makes Lesion tells you what's required Not the where, just what's desired Necessity's the only claim When you're playing the ablation game [Outro] From laboratory table to the trauma ward Lesion studies keep revealing what the brain's stored Function follows damage in this ancient dance Remove the part, lose the chance [Final Chorus] Cut it out, watch what breaks That's the method old science makes Lesion tells you what's required Not the where, just what's desired Necessity's the only claim When you're playing the ablation game
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