The Emergence Machine

Itch

physical · Biology · Level 11 · E6

E6Organisms

Each concept here is mapped to its prerequisites — the ideas you'd need first to understand it — all the way down to four foundations: Space, Time, Energy, Pattern. Click any prerequisite to drill down, or scroll for the chain graph.

Trace. Question. Emerge.

Emergence definition

The irritating sensation on the skin causing desire to scratch emerges from the interaction between the skin, which is a surface of the body, and the nerve, which transmits signals that enable the body to perceive and respond to stimuli.

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Wiktionary senses

External reference — all senses of the word “itch” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.

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Source: Wiktionary — “itch”. Content available under CC BY-SA 4.0.

Historical origin

Origin language
English

Prerequisite chain

Possible path of this concept down to the fundamental substrate.

thisfoundationsL11L10L9L8L7L2L1L0ItchNerveBrainNervous SystemOrganSkin… intermediate l…FormLifeProcessStructureActionChangeMatterEnergyPatternSpaceTimeE1 concrete → E14 abstract

Neighborhood

Direct prerequisites above, concepts that depend on this one below.

thisprerequisitesItchL11SkinL7NerveL10E1 concrete → E14 abstract

In other languages

  • itch English primary

Prerequisites

What you need to understand first.

  • Skin L7 (requires)
    Irritating sensation on the skin causing desire to scratch -- prerequisite: skin
  • Nerve L10 (requires)
    Irritating sensation on the skin causing desire to scratch -- prerequisite: nerve