CultureLab: Storytelling 2.0: When new narratives meet old brains: "We are our narratives" has become a popular slogan. "We" refers to our selves, in the full-blooded person-constituting sense. "Narratives" refers to the stories we tell about our selves and our exploits in settings as trivial as cocktail parties and as serious as intimate discussions with loved ones. We express some in speech. Others we tell silently to ourselves, in that constant little inner voice. The full collection of one's internal and external narratives generates the self we are intimately acquainted with. Our narrative selves continually unfold.
The language areas of the left hemisphere are well placed to carry out these tasks. They draw on information in memory (amygdalo-hippocampal circuits, dorsolateral prefrontal cortices) and planning regions (orbitofrontal cortices). As neurologist Jeffrey Saver has shown, damage to these regions disrupts narration in a variety of ways, ranging from unbounded narration, in which a person generates narratives unconstrained by reality, to denarration, the inability to generate any narratives, external or internal.
One compelling study used PET imaging to watch what is going on in the brain during inner speech. As expected, this showed activity in the classic speech production area known as Broca's area. But also active was Wernicke's area, the brain region for language comprehension, suggesting that not only do the brain's speech areas produce silent inner speech, but that our inner voice is understood and interpreted by the comprehension areas. The result of all this activity, I suggested, is the narrative self.
If we create our selves through narratives, whether external or internal, they are traditional ones, with protagonists and antagonists and a prescribed relationship between narrators, characters and listeners. They have linear plots with a fixed past, a present built coherently on it, and a horizon of possibilities projected coherently into the future. Digital technologies, on the other hand, are producing narratives that stray from this classic structure. New communicative interfaces allow for novel narrative interactions and constructions. Multi-user domains (MUDs), massively multiplayer online role-playing games (MMORPGs), hypertext and cybertext all loosen traditional narrative structure. Digital narratives, in their extremes, are co-creations of the authors, users and media. Multiple entry points into continuously developing narratives are available, often for multiple co-constructors.
Finally, there's the neuro-evolutionary perspective. Gazzaniga suggests that the rise of the brain's left hemisphere interpreter provides the evolutionary advantage of continued reinforcement of a new capacity for relentlessly hypothesising about possible causal patterns, combined with an older, right hemisphere capacity to make probability-based decisions. As Gazzaniga puts it, "Once mutational events in the history of our species brought the interpreter into existence, there was no getting rid of it."