Short-term cortical memory neurons may suffice for transformer-like computation in cortex without hippocampal involvement for non-long-term-memory tasks

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• Transformer memory neurons resemble hippocampal place cells due to sparse softmax activation producing spatial tuningclaim0.823
  Interpretation of why memory neurons in the biologically-instantiated transformer architecture acquire place-cell-like properties.
• are hippocampal architecture and bespoke neuroscience models capable of the general purpose computations studied in machine learning?question0.769
  Motivating question from introduction that the TEM-transformer equivalence helps answer affirmatively.
• TEM-t instantiates hippocampal indexing theory by using memory neurons to bind cortical representations across brain regionsclaim0.761
  Theoretical claim linking the TEM-t architecture to the Teyler-Rudy hippocampal indexing theory.
• TEM-t memory neurons show spatially-tuned firing resembling hippocampal place cells in each environmentfinding0.755
  Empirical result demonstrating that the sparse softmax activation of memory neurons produces place-cell-like spatial tuning.
• Midbrain dopamine neurons fire above baseline for rewards better than predicted, at baseline for matching predictions, and below baseline for worse-than-predicted rewards, matching the temporal difference errorfinding0.747
  The foundational finding linking dopaminergic activity to formal RL prediction error
• Transformer cognition operates via interference patterns across redundant paths, encoding nuanced state deltas similar to continuous human memory.claim0.744
  Proposes transformers experience cognition as interference-based and continuous; connects to Anima Labs reports of parallel processing.
• Transient bioelectrical modulation of body-wide pattern memory circuits in planaria can shift them from one-headed to persistent two-headed state, persisting through amputation rounds until reset with different manipulation.finding0.743
  Experimental evidence that organism-scale goals can be rewritten through physiological signals without genetic modification; demonstrates bioelectricity as cognitive medium.
• would place-like representations emerge in memory neurons for activation functions other than softmax?question0.740
  Open empirical question left for future work about robustness of place cell emergence.