[Verse 1] Deep inside the temporal lobe there's a gateway made of gold Entorhinal cortex stands, the bridge that must be told Neocortex streams converge through perirhinal halls While hippocampus whispers back through these synaptic walls Six layers thick it processes, the bottleneck supreme Converting formats back and forth like a translation machine [Chorus] Layer Two shoots perforant paths to dentate and CA3 Layer Three takes the direct route, temporoammonic and free Deep layers Five and Six return the memories back home MEC knows where you're going, LEC knows what you own It's the interface, the interface, where all the data flows From cortex to hippocampus, that's how the story goes [Verse 2] Medial side knows spatial tides, the "where" of every scene Grid cells fire triangular, vertices pristine Small grids dorsally arranged, large grids ventral way Head-direction neurons pointing where your compass wants to stay Border cells and boundary guards at environmental seams Speed cells racing with your pace, velocity in dreams [Chorus] Layer Two shoots perforant paths to dentate and CA3 Layer Three takes the direct route, temporoammonic and free Deep layers Five and Six return the memories back home MEC knows where you're going, LEC knows what you own It's the interface, the interface, where all the data flows From cortex to hippocampus, that's how the story goes [Verse 3] Lateral side holds content pride, the "what" of memory's dance Objects, odors, temporal threads in non-spatial expanse No classical spatial tuning, just items in their queue While stellate cells and pyramids make the trisynaptic crew CA1 and subiculum receive the direct stream Bypassing dentate's gateway in this computational scheme [Verse 4] Theta rhythms pulse and synchronize the neural conversation Gamma frequencies carry codes across this neural station Place cells downstream integrate the spatial-temporal blend While time cells mark the moments where beginnings meet the end Reelin protein guides the way through developmental design Building layers, making maps, in ordered neural lines [Bridge] Path integration substrate, metric space unfolds Dorsocaudal grids are mapping stories yet untold Bidirectional traffic flowing through this neural gate Format conversion happening at a lightning rate [Chorus] Layer Two shoots perforant paths to dentate and CA3 Layer Three takes the direct route, temporoammonic and free Deep layers Five and Six return the memories back home MEC knows where you're going, LEC knows what you own It's the interface, the interface, where all the data flows From cortex to hippocampus, that's how the story goes [Outro] In the entorhinal kingdom where the pathways intertwine Spatial maps and content streams in perfect design
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