This Is Your Brain on Great Literature
Research shows that reading rich narratives and metaphors activates areas of our brain outside of language, and frequent fiction reading is correlated with empathy.
Amid
the squawks and pings of our digital devices, the old-fashioned virtues
of reading novels can seem faded, even futile. But new support for the
value of fiction is arriving from an unexpected quarter: neuroscience.
Brain
scans are revealing what happens in our heads when we read a detailed
description, an evocative metaphor or an emotional exchange between
characters. Stories, this research is showing, stimulate the brain and
even change how we act in life.
Researchers
have long known that the “classical” language regions, like Broca’s
area and Wernicke’s area, are involved in how the brain interprets
written words. What scientists have come to realize in the last few
years is that narratives activate many other parts of our brains as
well, suggesting why the experience of reading can feel so alive. Words
like “lavender,” “cinnamon” and “soap,” for example, elicit a response
not only from the language-processing areas of our brains, but also
those devoted to dealing with smells.
In a 2006 study published in the journal NeuroImage,
researchers in Spain asked participants to read words with strong odor
associations, along with neutral words, while their brains were being
scanned by a functional magnetic resonance imaging (fMRI) machine. When
subjects looked at the Spanish words for “perfume” and “coffee,” their
primary olfactory cortex lit up; when they saw the words that mean
“chair” and “key,” this region remained dark. The way the brain handles
metaphors has also received extensive study; some scientists have
contended that figures of speech like “a rough day” are so familiar that
they are treated simply as words and no more. Last month, however, a
team of researchers from Emory University reported in Brain & Language
that when subjects in their laboratory read a metaphor involving
texture, the sensory cortex, responsible for perceiving texture through
touch, became active. Metaphors like “The singer had a velvet voice” and
“He had leathery hands” roused the sensory cortex, while phrases
matched for meaning, like “The singer had a pleasing voice” and “He had
strong hands,” did not.
Researchers have discovered that words
describing motion also stimulate regions of the brain distinct from
language-processing areas. In a study led by the cognitive scientist
Véronique Boulenger, of the Laboratory of Language Dynamics in France,
the brains of participants were scanned as they read sentences like
“John grasped the object” and “Pablo kicked the ball.” The scans
revealed activity in the motor cortex, which coordinates the body’s
movements. What’s more, this activity was concentrated in one part of
the motor cortex when the movement described was arm-related and in
another part when the movement concerned the leg.
The brain, it seems, does not make much of a
distinction between reading about an experience and encountering it in
real life; in each case, the same neurological regions are stimulated.
Keith Oatley, an emeritus professor of cognitive psychology at the
University of Toronto (and a published novelist), has proposed that
reading produces a vivid simulation of reality, one that “runs on minds
of readers just as computer simulations run on computers.” Fiction —
with its redolent details, imaginative metaphors and attentive
descriptions of people and their actions — offers an especially rich
replica. Indeed, in one respect novels go beyond simulating reality to
give readers an experience unavailable off the page: the opportunity to
enter fully into other people’s thoughts and feelings.
The novel, of course, is an unequaled medium
for the exploration of human social and emotional life. And there is
evidence that just as the brain responds to depictions of smells and
textures and movements as if they were the real thing, so it treats the
interactions among fictional characters as something like real-life
social encounters.
Raymond Mar, a psychologist at York University in Canada, performed an analysis of 86 fMRI studies, published last year in the Annual Review of Psychology,
and concluded that there was substantial overlap in the brain networks
used to understand stories and the networks used to navigate
interactions with other individuals — in particular, interactions in
which we’re trying to figure out the thoughts and feelings of others.
Scientists call this capacity of the brain to construct a map of other
people’s intentions “theory of mind.” Narratives offer a unique
opportunity to engage this capacity, as we identify with characters’
longings and frustrations, guess at their hidden motives and track their
encounters with friends and enemies, neighbors and lovers.
It is an exercise that hones our real-life
social skills, another body of research suggests. Dr. Oatley and Dr.
Mar, in collaboration with several other scientists, reported in two
studies, published in 2006 and 2009, that individuals who frequently
read fiction seem to be better able to understand other people,
empathize with them and see the world from their perspective. This
relationship persisted even after the researchers accounted for the
possibility that more empathetic individuals might prefer reading
novels. A 2010 study by Dr. Mar found a similar result in preschool-age
children: the more stories they had read to them, the keener their
theory of mind — an effect that was also produced by watching movies
but, curiously, not by watching television. (Dr. Mar has conjectured
that because children often watch TV alone, but go to the movies with
their parents, they may experience more “parent-children conversations
about mental states” when it comes to films.)
Fiction, Dr. Oatley notes, “is a particularly
useful simulation because negotiating the social world effectively is
extremely tricky, requiring us to weigh up myriad interacting instances
of cause and effect. Just as computer simulations can help us get to
grips with complex problems such as flying a plane or forecasting the
weather, so novels, stories and dramas can help us understand the
complexities of social life.”
These findings will affirm the experience of
readers who have felt illuminated and instructed by a novel, who have
found themselves comparing a plucky young woman to Elizabeth Bennet or a
tiresome pedant to Edward Casaubon. Reading great literature, it has
long been averred, enlarges and improves us as human beings. Brain
science shows this claim is truer than we imagined.
Annie Murphy Paul is the author of the forthcoming book Brilliant: The Science of How We Get Smarter. Read more at her blog, where this post first appeared.
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