| These are species-atypical (psychopathological) fear circuits which are posited to have been firm-wired (prepotentiated) in a small number of extant humans by previously rare allele variants. It is likely that these allele variants spread only after the emergence of human Neolithic tribalism (cultures) and mostly by gene–culture co-evolution and by mate-choice-driven stabilizing selection |
| Neuroevolutionary Time-depth: ∼ 12 Kya (Neolithic) |
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