[Verse 1] Talk about the basement, floor six, the final stack, Layer VI sits deepest, ain't no going back, Pyramidal spires mixed with multiform shape, Cell bodies scattered like keys with no escape, This the loading dock where hippocampus sends its freight, Output rolling in through the subiculum gate, Six absorbs the echo of the trace that just got made, Then ships it out to thalamus, precision relay parade. [Chorus] Six is deep, six is the quiet floor, Multiform and pyramidal, knocking at the door, Hippocampus whispers, layer six receives the call, Thalamus and cortex — six sends it to them all, Deepest layer, dialogue that never sleeps, Corticothalamic loop keeps memory it keeps. [Verse 2] Neuroscience textbooks kinda skip this floor, Lump it with layer five, call it "deep" and nothing more, Recondite — that means obscure, hidden from the light, A stratum understudied, always losing out the fight, But don't sleep on the sleeper, it's the messenger of dreams, Firing in slow rhythms during consolidation schemes, While you're snoring, six is talking to the thalamic nation, Replaying grid and place cell conversation. [Chorus] Six is deep, six is the quiet floor, Multiform and pyramidal, knocking at the door, Hippocampus whispers, layer six receives the call, Thalamus and cortex — six sends it to them all, Deepest layer, dialogue that never sleeps, Corticothalamic loop keeps memory it keeps. [Verse 3] Picture the loop: cortex feeds into the ring, Entorhinal gathers, hippocampus does its thing, Loops back through subiculum, lands on six's door, Six reroutes the signal to the thalamic core, Thalamus reflects it back to cortex overhead, A triangle of murmurs while you're sleeping in your bed, That's the theory — corticothalamic dialogue, Consolidating memory like sorting through a log. [Bridge] Now here's the itch modern science hasn't scratched, Which multiform subtype's genetically attached To the thalamic axon — which one's real, which one's mismatched? Cre-lines and viral tracers, optogenetic latch, Tag the cells, record the spikes, watch the pattern hatch, Ask: does six's chatter shift the moment memories catch? [Verse 4] So the open question standing at this floor's front gate: Which layer six cell class controls the consolidate? Single-cell transcriptomics could finally segregate The multiform mystery, the pyramidal mate, Silence one, then silence both, while hippocampus plays, Would thalamic rhythm falter, would the trace decay? Modern tools can settle what old anatomy debated, Layer six, the recondite, at last interrogated. [Chorus] Six is deep, six is the quiet floor, Multiform and pyramidal, knocking at the door, Hippocampus whispers, layer six receives the call, Thalamus and cortex — six sends it to them all, Deepest layer, dialogue that never sleeps, Corticothalamic loop keeps memory it keeps.
← B5 — Layer V | C1 — The Perforant Path (Superficial EC → Hippocampus) →