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Representation/Maturana: the nervous system can interact recursively in infinite ways with the representations of its interactions - representations express agreement that observes the observer between relations and different activity states of the nervous system - they are situated themselves in the cognitive domain.
Representation/meaning/description/semantics/Maturana: these are terms that are unique to operating in a consensual area - they have no explanation value in regard to the actual operating.
Representation/Maturana: an observer can always understand a state of activity as a result of interaction of the nervous system as a representation of the interaction.
Biologie der Realität Frankfurt 2000