[Verse 1] After V1 does its primary scan V2 steps up with a grander plan The largest area downstream from sight Organized in stripes of cellular might Cytochrome oxidase paints the way Thick and thin and pale display Magno parvo blob segregation Continues through this brain location [Chorus] V2 sees what isn't there Illusory contours in the air Border ownership decides the ground Figure from background can be found Stripes of thick carry motion and depth Thin stripes handle color with adept Pale stripes work on form and line V2 makes the abstract shine [Verse 2] Kanizsa triangles fool the eye But V2 neurons still reply To edges that don't really exist Context clues they can't resist The system fills in structure bold From gaps and hints the story's told No luminance edge upon the scene Yet boundaries clear and crisp are seen [Chorus] V2 sees what isn't there Illusory contours in the air Border ownership decides the ground Figure from background can be found Stripes of thick carry motion and depth Thin stripes handle color with adept Pale stripes work on form and line V2 makes the abstract shine [Bridge] Beyond the classical field it reaches Feedback loops and lateral teaches Which side owns this visual border Figure ground in perfect order Angles corners curvature too Complex shapes begin to brew Combinations of orientations First steps toward representations [Verse 3] Thick stripes process disparity Motion flows with clarity Thin stripes catch the color streams Red and blue in vivid dreams Pale stripes trace each orientation Building blocks of shape creation Three pathways working in concert Visual processing expert [Verse 4] Surface properties V2 defines Texture brightness subtle signs Lightness constancy holds true Despite the shadows passing through Spatial frequency tuning tight Both low and high in perfect sight Harmonic relationships unfold Complex patterns to behold [Chorus] V2 sees what isn't there Illusory contours in the air Border ownership decides the ground Figure from background can be found Stripes of thick carry motion and depth Thin stripes handle color with adept Pale stripes work on form and line V2 makes the abstract shine [Outro] From V1's simple edge detection V2 builds the next connection Subjective boundaries take their place In the visual processing race
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