Reference Frames and Gain Fields

chill, uk spoken poetry, jazz, bass and piano, slow · 3:59

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Lyrics

[Verse 1]
Nineteen eighty-three, Mountcastle and Andersen stare
At neurons in the parietal lobe, firing debonair
Same dot on the retina, but the answer won't stay true
Eighty-five in Science now — Essick, Siegel, step into view
Area seven-a, LIP, lighting the display
Response amplitude stretching every time the eyes stray
Not a switch but a dimmer — call it a gain field name
The visual signal's constant, the volume's not the same

[Chorus]
Gain field, gain field, множитель для твоих глаз
(gain field, gain field, a multiplier for your eyes)
Eye position scales the signal, watch the numbers dance
Взгляд решает, где ты видишь мир вокруг
(the gaze decides just where you're seeing the world around)
Reference frames keep shifting, round and round and round

[Verse 2]
Zipser and Andersen, eighty-eight, Nature in their hand
Trained a backprop network just to see if it would understand
Fed it retinal location plus the eye position too
Asked it for a head-centered answer — here's what it taught through
Hidden units, unprompted, grew a pattern on their own
Multiplicative gain fields, just like neurons we had known
A machine rediscovered what the cortex had designed

[Verse 3]
Pouget and Sejnowski, ninety-seven, flipped the plan
No need for one master map that only humans scan
Basis functions — population coding, gain and place combined
From that mixture any frame reads out by weighted lines
PPC's no blueprint drafted, etched in stone and sealed
It's a polyglot of neurons — many tongues, one shared field
(polyglot: a speaker fluent in many languages at once)

[Chorus]
Gain field, gain field, множитель для твоих глаз
Eye position scales the signal, watch the numbers dance
Взгляд решает, где ты видишь мир вокруг
Reference frames keep shifting, round and round and round

[Verse 4]
But the frames don't all agree — go look at PRR instead
Batista, ninety-nine in Science: reach goals ride the eyes, not the head
Duhamel and Bremmer found VIP cells bolted to the skull
Head-centered, stubborn, steady, never swayed at all
Mullette-Gillman, Cohen, Groh, two-thousand-five, LIP's own blend
Hybrid coordinates for sight and sound, intermediate to the end
Chang and Snyder, twenty-ten: each neuron keeps its private scale
Idiosyncratic tuning — no committee, no fixed trail

[Bridge]
No canonical cathedral, just a scattered, mingled choir
Eye-centered, head-centered, every signal wired higher
Mixed coordinates in parallel, nothing purely pure
Карта в голове не главная — кодов множество, это точно
(the map in the head isn't the only one — there are many codes, for sure)

[Chorus]
Gain field, gain field, множитель для твоих глаз
Eye position scales the signal, watch the numbers dance
Взгляд решает, где ты видишь мир вокруг
Reference frames keep shifting, round and round and round

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