metabolic-constraints

4 notes carry this tag — 1 moc, 2 claims, 1 capture. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

A receipt for the mechanism, not a law — brain and machine invert on whether learning or using is the cheaper operation, yet both spend most of their energy signalling/inferring; 'training is the expensive phase' is a property of backpropagation, not a law of learning systems

topic map 2026-08-25 · neuroenergetics, brain-energy-budget, training-inference-asymmetry, inference-economics, synaptic-plasticity
Attwell & Laughlin (2001) modeled grey-matter signaling energy as 47% action potentials, 34% postsynaptic glutamate effects, 13% resting potential, 3% glutamate recycling

claim seedling Tier 1 2026-07-27 · neuroenergetics, brain-energy-budget, action-potentials, synaptic-transmission, metabolic-constraints
Howarth, Gleeson & Attwell (2012) revised the cortical signaling-energy budget, cutting the action-potential share from 47% to 21% and raising the postsynaptic share to 50%

claim seedling Tier 1 2026-07-27 · neuroenergetics, brain-energy-budget, action-potentials, synaptic-transmission, metabolic-constraints
Attwell & Laughlin 2001: the primary grey-matter signaling energy-budget split

capture promoted 2026-07-23 · neuroscience, brain-energy-budget, Attwell-Laughlin, action-potentials, synaptic-transmission