neural Darwinism (theory of neuronal group selection)

Compiled with AI assistance and selectively reviewed. Please consult the cited passages; the books remain the authoritative source. About this companion

Editorial synthesis · provisional

Definition

Neural Darwinism, or the Theory of Neuronal Group Selection, is Edelman’s account of brain development and learning through variation, differential amplification and value-guided retention of neuronal groups, integrated by reentry. RB2 expressly distinguishes the analogy from biological natural selection: neural groups do not replicate as organisms do. Its use within the author’s broader grammar remains an attributed theoretical account, not identity between neural and evolutionary mechanisms.

Explanation

The primary repertoire arises through variable developmental connectivity; experience then changes synaptic strengths into a secondary repertoire. Value signals bias which activities matter to the organism. Reentrant interactions coordinate distributed groups rather than adding an executive observer or a pre-programmed logic engine that specifies every future response.

The source preserves Crick’s objection that neuronal groups do not replicate and Edelman’s reply that differential amplification suffices for his selectional use. This dispute limits the Darwinian label. The proposal does not insert genetic copying inside the brain or describe the neural theory as an uncontested literal instance of population evolution.

RB2’s synthesis emphasizes brain, body and environment together, while RB1’s cross-domain architecture explicitly treats selection as a family of different constraint regimes. Thus a common descriptive grammar can support comparison without erasing distinct substrates, timescales or empirical burdens. Neither Nobel status nor conceptual fit constitutes independent verification of the whole theory.

Scope and attribution

Keep Edelman’s attribution, Crick’s objection and the distinct primary, secondary and reentrant operations.

AB — The Actual Book

Source-verified occurrence; see the printed-page references below.

Occurrence locators: Notes: 240.

RB2 — The Real Book, Volume II: Becoming Is Being

Development, experience, value and reentry define the attributed theory, retaining the replication controversy.

Occurrence locators: 20, 21, 22, 23, 25, 26, 27, 37, 38.

Background used in the editorial explanation

Named theories and mechanisms are distinguished from neighboring background, homonyms and the author’s own synthesis. Reproduced AI passages retain their separate voice.