| For the operation of the nervous system (and organism), there cannot be a distinction between illusions, hallucinations, or perceptions, because a closed neuronal network cannot discriminate between internally and externally triggered changes in relative neuronal activity. This distinction pertains exclusively to the domain of descriptions in which the observer defines an inside and an outside for the nervous system and the organism. | |||
| p. 46 | |||
| Humberto R. Maturana |
"Biology and Language: The Epistemology of Reality" Psychology and Biology of Language and Thought Academic Press, 1978 |
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| Essays in honor of Eric Lenneberg, edited by George A. Miller and Elizabeth Lenneberg. | |||
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