[Verse 1]
In the retina's depths, photoreceptors dance
Rods and cones convert photons to a neural stance
Bipolar cells relay the signals through the chain
While horizontal cells spread contrast across the plane
Ganglion cells fire their coded message true
Creating center-surround fields in patterns we pursue
[Chorus]
From photons to perception, layer by layer we climb
Retina to cortex, processing visual time
Edge detectors firing, orientation maps align
Complex cells build features from simple design
The biological vision stack, refined through evolution's grind
From light waves to meaning in the visual mind
[Verse 2]
Lateral geniculate nucleus sorts the visual stream
Magnocellular pathways track motion's fleeting dream
Parvocellular channels carry color and fine detail
Through optic radiations that never seem to fail
Primary visual cortex with columns neat and straight
Simple cells detect edges at angles we calculate
[Chorus]
From photons to perception, layer by layer we climb
Retina to cortex, processing visual time
Edge detectors firing, orientation maps align
Complex cells build features from simple design
The biological vision stack, refined through evolution's grind
From light waves to meaning in the visual mind
[Bridge]
Hubel and Wiesel mapped the cortical terrain
Found receptive fields that drove the visual train
What pathway processes where and how things move
Ventral stream determines what we need to prove
Hierarchical processing builds up complexity
From bars and edges to full object reality
[Verse 3]
Area seventeen starts the cortical cascade
Simple cells respond to oriented lines displayed
Complex cells pool inputs from their simple kin
End-stopped cells detect where corners begin
Higher areas integrate across the visual field
Building representations that object recognition yield
[Verse 4]
Temporal cortex assembles features into forms
Inferior temporal regions weather recognition storms
Face patches specialized for human countenance
While other modules handle objects at a glance
Feedback connections refine the forward flow
Top-down predictions help us truly see and know
[Chorus]
From photons to perception, layer by layer we climb
Retina to cortex, processing visual time
Edge detectors firing, orientation maps align
Complex cells build features from simple design
The biological vision stack, refined through evolution's grind
From light waves to meaning in the visual mind
[Outro]
Architecture proven through electrode's faithful trace
Signals mapped and measured in this visual space
Evidence accumulated through decades of research
The vision stack decoded through scientific search