DS
The Evolutionary Spiral
From the ancient brainstem to the neocortex —
evolution inscribed consciousness layer by layer
Evolutionary Spiral — Brain Evolution Concept
Emergence of Attractor Hierarchies
Each evolutionary stage added new attractor basins —
new stable patterns of neural firing that enabled more complex behaviours
Attractor Evolution Steps
~550 MILLION YEARS AGO
Brainstem Reflexes
Survival attractors — fight, flight, feeding, reproduction. The ancient core. Fixed-point attractors for immediate survival.
~300 MILLION YEARS AGO
Limbic System Emerges
Emotional attractors — fear, bonding, reward. The limbic ring wraps around the brainstem. Social memory begins.
~200 MILLION YEARS AGO
Basal Ganglia Develops
Motor policy attractors — learned action sequences, habit formation, reward-based selection. The policy engine of behaviour.
~65 MILLION YEARS AGO
Neocortex Expands
Perceptual and cognitive attractors — pattern recognition, planning, language precursors. The great cortical expansion of mammals.
~2 MILLION YEARS AGO
PFC + DMN — The Self Emerges
Self / narrative attractor — the default mode network binds all attractor systems into a unified self-model. Consciousness as coherent narrative.
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