Internal Communication

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Internal communication is when members of a system are able to communicate with each other without having to speak or write externally.

This can happen in various ways, like through a shared headspace, or by mentally talking to each other. Not all systems have this, but it is fairly common.

Internal communication can be used for coordinating actions with the body, or simply for talking to each other and keeping each other up to date. It can also be used as a way to allow a headmate who isn't currently fronting to talk to the outside world, with the fronter(s) as a messenger.

Systems can gain or lose internal communication over time, such as through therapy, introspection, traumatic events, or any other cause. It's also possible that only some members have this ability, and others don't.

Related Terms
Thoughtsharing refers to unspoken internal communication between headmates; while Thoughtbleeding refers to unintentional and unspoken internal communication between headmates.

Thoughtlogue refers to a system/sisasystem that communicates through thoughtbleeding or thoughtsharing; and Spatial Thoughtlogue refers to a system/sisasystem in which sentient headspaces and headmates may communicate through thoughtbleeding/thoughtsharing.

Mediated communication (or Transmission) refers to internal communication that is accomplished through a technological intermediary or a specific tool (e.g, forming full sentences from isolated words from a radio, a page, a dictionary, etc.).

Intermediate communication refers to internal communication between sentient headspaces and headmates, when one is translating foreign languages (the headmate counterpart is translator) or interpreting non-verbal/semi-verbal speech to another (the headmate counterpart is interpreter).