www.astralcodexten.com/p/next-token-predictor-is-an-ais-job
1 correction found
the entorhinal cells in the hippocampus
Entorhinal (grid) cells are located in the entorhinal cortex (in the medial temporal lobe/parahippocampal region), not in the hippocampus proper.
Full reasoning
Why this is incorrect
The post locates “entorhinal cells” in the hippocampus. But the entorhinal cortex is a distinct cortical region in the medial temporal lobe that is strongly connected with, and provides major input to, the hippocampus/hippocampal formation—i.e., it is not itself “in the hippocampus” in the ordinary anatomical sense.
Evidence
- A major review on grid cells states that grid cells are in the medial entorhinal cortex (MEC), not the hippocampus.
- A detailed anatomical review (NCBI/PMC) describes the entorhinal cortex as a nodal point between neocortex and the hippocampal formation, conveying input to the hippocampal formation—again treating it as a separate structure rather than “in the hippocampus.”
Because the key anatomical location (“in the hippocampus”) is contradicted by standard neuroanatomical descriptions, this specific phrasing is inaccurate.
2 sources
- Grid cells and cortical representation | Nature Reviews Neuroscience (2014)
“Grid cells in the medial entorhinal cortex (MEC) are examples of a high-level cortical representation.”
- What Does the Anatomical Organization of the Entorhinal Cortex Tell Us? (Neural Plasticity, 2008)
“Today we conceive the entorhinal cortex as the nodal point between the hippocampal formation… and… cortex… This input in turn is conveyed to the hippocampal formation.”