The Marginalian
The Marginalian

Polyvagal Theory and the Neurobiology of Connection: The Science of Rupture, Repair, and Reciprocity

Polyvagal Theory and the Neurobiology of Connection: The Science of Rupture, Repair, and Reciprocity

“A purely disembodied human emotion is a nonentity,” William James wrote in his pioneering 1884 theory of how our bodies affect our feelings — the first great gauntlet thrown at the Cartesian dualism of body versus mind. In the century and a half since, we have come to see how the body and the mind converge in the healing of trauma; we have come to see consciousness itself as a full-body phenomenon.

Beyond the brain, no portion of the body shapes our mental and emotional landscape more profoundly than the tenth cranial nerve — the longest nerve of the autonomic nervous system that unconsciously governs the inner workings of the body. Known as the vagus nerve — from the Latin for “wandering,” a root shared with vagabond and vague — it meanders from the brain to the gut, touching every organ along the way with its tendrils, controlling everything from our heart rate and digestion to our reflexes and moods.

One of Santiago Ramón y Cajal’s little-known drawings of the brain.

In James’s lifetime, it was believed that synaptic communication within the brain was electrical. But when neuroscience founding father Santiago Ramón y Cajal discovered a gap between neurons — a miniature abyss electricity could not cross — it became clear that something else must be transmitting the signals between neurons. In 1921, the German pharmacologist Otto Loewi confirmed the existence of these theorized chemical messengers by stimulating the vagus nerve of a frog and discovering in the secreted substance the first known neurotransmitter. Every thought, feeling, and mood that has ever swept across the sky of your mind was forecast by your neurotransmitters and executed by your vagus nerve.

A century after James, while working with premature babies, the psychiatrist Stephen Porges uncovered two distinct vagal pathways in the nervous system — the much older dorsal vagus, which evolved around 500 million years ago in a fish now extinct to regulate fear response and activate shutdown, and the ventral vagus, a uniquely mammalian development about 200 million old, controlling our capacity for connection and communication. This research became the foundation of polyvagal theory — the science of how the interplay of these two systems shapes our sense of safety and danger, shapes our attachment styles and relationship patterns, shapes our very ability to tolerate the risks of living necessary for being in love with life.

In the decades since, no one has championed polyvagal theory more ardently than the clinical psychologist Deb Dana. In her book The Polyvagal Theory in Therapy: Engaging the Rhythm of Regulation (public library), written for therapists, she explores how trauma automates our adaptive responses in a survival story that puts the fear-based dorsal vagus in command to induce collapse and dissociation, and how we can rewire our neural pathways toward the emotional safety of the ventral vagal state, where our capacity for curiosity, connection, and change flourishes.

Art by Sophie Blackall from Things to Look Forward to

Dana writes:

Connectedness is a biological imperative, and at the top of the autonomic hierarchy is the ventral vagal pathway that supports feelings of safety and connection. The ventral vagus (sometimes called the “smart vagus” or “social vagus”) provides the neurobiological foundation for health, growth, and restoration. When the ventral vagus is active, our attention is toward connection. We seek opportunities for co-regulation. The ability to soothe and be soothed, to talk and listen, to offer and receive, to fluidly move in and out of connection is centered in this newest part of the autonomic nervous system. Reciprocity, the mutual ebb and flow that defines nourishing relationships, is a function of the ventral vagus. As a result of its myelinated pathways, the ventral vagus provides rapid and organized responses. In a ventral vagal state, we have access to a range of responses including calm, happy, meditative, engaged, attentive, active, interested, excited, passionate, alert, ready, relaxed, savoring, and joyful.

This biological need for co-regulation with others is not dissimilar to the concept of limbic revision — “the power to remodel the emotional parts of the people we love,” and to have our own emotional pathways remodeled by the people who love us. This is only possible in safe relationships, and it is the vagus system that governs our sense of safety.

Central to polyvagal theory is the distinction between conscious perception and what Porges termed neuroception — the conditioned way the autonomic nervous system responds from within the body, without our awareness, to cues of safety and danger in the outside world. Because our vagal pathways are shaped by our earliest experiences of co-regulation in the infant-parent dyad, ruptures in that co-regulation — whether by abuse or neglect — condition the dorsal vagus to become dominant and make a neuroception of danger the default response, storying reality away from safety, nowhere more perilously than in intimate relationships. Dana writes:

Co-regulation is at the heart of positive relationships… If we miss opportunities to co-regulate in childhood, we feel that loss in our adult relationships. Trauma, either in experiences of commission (acts of harm) or omission (absence of care), makes co-regulation dangerous and interrupts the development of our co-regulatory skills. Out of necessity, the autonomic nervous system is shaped to independently regulate. Clients will often say that they needed connection but there was no one in their life who was safe, so after a while they stopped looking. Through a polyvagal perspective, we know that although they stopped explicitly looking and found ways to navigate on their own, their autonomic nervous system never stopped needing, and longing for, co-regulation.

Art by Olivier Tallec from Big Wolf & Little Wolf

Because we are physiologies first and psychologies second, but we are also storytelling and sensemaking creatures, our minds naturally create emotional narratives out of these unconscious vagal states — stories that, if we are not careful enough and conscious enough, may come to subsume reality. Dana observes:

The mind narrates what the nervous system knows. Story follows state.

Our early adaptive survival responses of trauma train the autonomic nervous system on a default neuroception of danger, replacing patterns of connection with patterns of protection in a fear-based narrative. And yet these reflexes can be recalibrated by retraining our regulatory pathways.

Because the feeling of reciprocity is one of the most powerful regulators of the autonomic nervous system, a great deal of repair and rewiring can happen in relationships winged with true reciprocity. Dana writes:

Reciprocity is a connection between people that is created in the back-and-forth communication between two autonomic nervous systems. It is the experience of heartfelt listening and responding. We are nourished in experiences of reciprocity, feeling the ebb and flow, giving and receiving, attunement, and resonance.

Art from The Human Body, 1959.

But the great paradox is that if our earliest template of connection is marked by rupture and deficient co-regulation, our very notion of reciprocity may be warped, leading us to tolerate immense asymmetries of affection and attention, to mistake deeply imbalanced relationships for reciprocal. The grounds for optimism lie in the very real possibility of changing the template through safe and nourishing relationships — ones we may not so much choose at first, for trauma can taint our choices with unhealthy patterns, as chance into and only then choose to nurture. The payoff is a gradual transition from the dorsal vagal state into the ventral vagal, a gradual willingness to release the patterns of protection in favor of connection, allowing the kinds of relationships Adrienne Rich celebrated as ones “in which two people have the right to use the word ‘love.'”

Complement with the science of how emotion are made and how love rewires the brain, then revisit Toni Morrison on reclaiming the body as an instrument of joy, sanity, and self-love.

BP

An Occasion for Unselfing: Iris Murdoch on Imperfection and How to Be More Unselfish

An Occasion for Unselfing: Iris Murdoch on Imperfection and How to Be More Unselfish

To recognize that there are infinitely many kinds of beautiful lives is to step outside the self, beyond its particular conceptions of beauty — which includes, of course, moral beauty — and walking beside it with humble, nonjudgmental curiosity about the myriad other selves afoot on their own paths, propelled by their own ideals of the Good.

Such recognition requires what the great moral philosopher and novelist Iris Murdoch (July 15, 1919–February 8, 1999) termed unselfing — a difficult, triumphant act for which, Murdoch argues in her 1970 masterpiece The Sovereignty of Good (public library), nature and art uniquely train us.

Dame Iris Murdoch by Ida Kar (National Portrait Gallery)

A century and a half after Emerson observed that “the question of Beauty takes us out of surfaces, to thinking of the foundations of things,” Murdoch defines what we commonly call beauty as “an occasion for ‘unselfing’” — an occasion most readily experienced in our communion with nature and our contemplation of art. She writes:

Beauty is the convenient and traditional name of something which art and nature share, and which gives a fairly clear sense to the idea of quality of experience and change of consciousness. I am looking out of my window in an anxious and resentful state of mind, oblivious of my surroundings, brooding perhaps on some damage done to my prestige. Then suddenly I observe a hovering kestrel. In a moment everything is altered. The brooding self with its hurt vanity has disappeared. There is nothing now but kestrel. And when I return to thinking of the other matter it seems less important. And of course this is something which we may also do deliberately: give attention to nature in order to clear our minds of selfish care.

Art from Trees at Night, 1926. (Available as a print.)

Oliver Sacks would come to echo the sentiment decades later in his observation that meeting nature on its own terms and timescales broadens our perspective by effecting “a detachment from the timescale, the urgencies, of daily life.” But this unselfing, Murdoch cautions, cannot arise from a straining of the will, for the will is a clenching of the very self which true beauty deconditions; rather, it comes as a gladsome relaxing of the spirit, of our essential nature, into the shared pulse of existence:

A self-directed enjoyment of nature seems to me to be something forced. More naturally, as well as more properly, we take a self-forgetful pleasure in the sheer alien pointless independent existence of animals, birds, stones and trees.

Art by Arthur Rackham for a rare 1926 edition of Shakespeare’s The Tempest. (Available as a print.)

This “self-forgetful pleasure” calls to mind Jeanette Winterson’s wonderfully paradoxical notion of active surrender as the crucible of our joy in art and the fulcrum for art’s transformative power over the self. But while there is a distinct difference between how nature and art each effect unselfing, Murdoch argues that what separates great art from the bad and the mediocre is precisely this capacity for stripping down the self rather than inflating the ego — a notion evocative of Tolstoy’s insistence that “a real work of art destroys, in the consciousness of the receiver, the separation between himself and the artist.” Murdoch writes of this dissolution of the self in the presence of great art:

The experience of art is more easily degraded than the experience of nature. A great deal of art, perhaps most art, actually is self-consoling fantasy, and even great art cannot guarantee the quality of its consumer’s consciousness. However, great art exists and is sometimes properly experienced and even a shallow experience of what is great can have its effect. Art, and by “art” from now on I mean good art, not fantasy art, affords us a pure delight in the independent existence of what is excellent. Both in its genesis and its enjoyment it is a thing totally opposed to selfish obsession. It invigorates our best faculties and, to use Platonic language, inspires love in the highest part of the soul. It is able to do this partly by virtue of something which it shares with nature: a perfection of form which invites unpossessive contemplation and resists absorption into the selfish dream life of the consciousness.

Art by Lia Halloran for The Universe in Verse: The Astronomy of Walt Whitman. (Available as a print.)

And yet, Murdoch argues, any real understanding of goodness is necessarily an embrace of imperfection — something philosopher Martha Nussbaum, in many ways Murdoch’s only worthy intellectual heir, would argue brilliantly a generation later in her incisive case for the intelligence of emotions. Murdoch writes:

The concept of Good… is a concept which is not easy to understand partly because it has so many false doubles, jumped-up intermediaries invented by human selfishness to make the difficult task of virtue look easier and more attractive: History, God, Lucifer, Ideas of power, freedom, purpose, reward, even judgment are irrelevant. Mystics of all kinds have usually known this and have attempted by extremities of language to portray the nakedness and aloneness of Good, its absolute for-nothingness. One might say that true morality is a sort of unesoteric mysticism, having its source in an austere and unconsoled love of the Good. When Plato wants to explain Good he uses the image of the sun. The moral pilgrim emerges from the cave and begins to see the real world in the light of the sun, and last of all is able to look at the sun itself.

[…]

We may also speak seriously of ordinary things, people, works of art, as being good, although we are also well aware of their imperfections. Good lives as it were on both sides of the barrier and we can combine the aspiration to complete goodness with a realistic sense of achievement within our limitations.

Art by Margaret C. Cook from a rare 1913 edition of Whitman’s Leaves of Grass. (Available as a print.)

With an eye to the legacy of the Romantics, who married nature and art in their model of happiness and transcendence, Murdoch returns to the notion of unselfing and the beautiful tessellation of possibility and limitation that defines our nature:

The self, the place where we live, is a place of illusion. Goodness is connected with the attempt to see the unself, to see and to respond to the real world in the light of a virtuous consciousness. This is the non-metaphysical meaning of the idea of transcendence to which philosophers have so constantly resorted in their explanations of goodness. “Good is a transcendent reality” means that virtue is the attempt to pierce the veil of selfish consciousness and join the world as it really is. It is an empirical fact about human nature that this attempt cannot be entirely successful.

The Sovereignty of Good is an immensely insightful read in its entirety. Complement this particular fragment with Robinson Jeffers on nature and moral beauty and Oliver Sacks on the healing power of gardens, then revisit Murdoch on art as a force of resistance to tyranny, the key to great storytelling, and her uncommonly beautiful love letters.

BP

The Black Robin and the Power of Tenacious Tenderness: How a Single Mother Brought an Entire Species Back from the Brink of Extinction

This essay is adapted from Traversal.

“In the great chain of cause and effect,” Alexander von Humboldt wrote as he was teaching science to read the poetry of nature, “no single fact can be considered in isolation.”

When the first European colonists made landfall on New Zealand’s shores in Humboldt’s lifetime, the cats and rats that descended from their ships began decimating the native population of black robins — sparrow-sized birds with yellow-soled feet that had evolved without mammalian predators, mate for life in monogamous pairs, and raise only two chicks per year in cuplike nests close to the ground.

Bird by bird, claw by claw, there were only seven survivors within a century.

Black robin among other native birds (John Gerrard Keulemans, 1907)

Desperate to encourage the survivors to breed, conservationists moved them to Mangere Island, where twenty thousand trees were planted just to provide a hospitable habitat for the robins. But they would not pair — mysterious are the ways of even a bird’s heart, for it is all a single mystery.

Two of the seven died.

Among the five survivors there was a sole female capable of laying fertile eggs — a robin so aged that she came to be known as Old Blue. At eight, she had outlived the average black robin twofold. With the survival of the species resting on Old Blue’s near flightless wings, scientists thought that if her offspring were raised by surrogate parents, she would be able to lay more eggs.

Warblers were the first designated foster parents, but they failed to feed the chicks enough.

Tomtits were tried next, but they were too successful as foster parents — the black robin chicks grew up perceiving themselves as tomtits and wanted to mate only with other tomtits.

Finally, the chicks were returned to Old Blue, in whose care they thrived as black robins.

A single mother brought a whole species back from the brink of extinction.

Old Blue lived to be fourteen and raised eleven chicks. All the black robins in the world today, numbering around 250, are fractal emissaries of her genes — a winged reminder that immensities of harm can be undone by a single act of tenacious tenderness.

BP

The Difficult Balance of Intimacy and Independence: Beloved Philosopher and Poet Kahlil Gibran on the Secret to a Loving and Lasting Relationship

The Difficult Balance of Intimacy and Independence: Beloved Philosopher and Poet Kahlil Gibran on the Secret to a Loving and Lasting Relationship

“What’s the use of falling in love if you both remain inertly as-you-were?” Mary McCarthy asked her friend Hannah Arendt in their correspondence about love. The question resonates because it speaks to a central necessity of love — at its truest and most potent, love invariably does change us, deconditioning our painful pathologies and elevating us toward our highest human potential. It allows us, as Barack Obama so eloquently wrote in his reflections on what his mother taught him about love, “to break across our solitude, and then, if we’re lucky, [be] finally transformed into something firmer.”

But in the romantic ideal upon which our modern mythos of love is built, the solidity of that togetherness is taken to such an extreme as to render love fragile. When lovers are expected to fuse together so closely and completely, mutuality mutates into a paralyzing codependence — a calcified and rigid firmness that becomes brittle to the possibility of growth. In the most nourishing kind of love, the communion of togetherness coexists with an integrity of individuality, the two aspects always in dynamic and fluid dialogue. The philosopher Martin Heidegger captured this beautifully in his love letters to Hannah Arendt: “Why is love rich beyond all other possible human experiences and a sweet burden to those seized in its grasp? Because we become what we love and yet remain ourselves.”

This difficult balance of intimacy and independence is what the great Lebanese-American artist, poet, and philosopher Kahlil Gibran (January 6, 1883–April 10, 1931) explores with uncommon insight and poetic precision in a passage from his 1923 masterwork The Prophet (public library).

Illustration by Julie Paschkis from Pablo Neruda: Poet of the People by Monica Brown

By way of advice on the secret to a loving and lasting marriage, Gibran offers:

Let there be spaces in your togetherness,
And let the winds of the heavens dance between you.

Love one another but make not a bond of love:
Let it rather be a moving sea between the shores of your souls.
Fill each other’s cup but drink not from one cup.
Give one another of your bread but eat not from the same loaf.
Sing and dance together and be joyous, but let each one of you be alone,
Even as the strings of a lute are alone though they quiver with the same music.

Give your hearts, but not into each other’s keeping.
For only the hand of Life can contain your hearts.
And stand together, yet not too near together:
For the pillars of the temple stand apart,
And the oak tree and the cypress grow not in each other’s shadow.

Complement this particular portion of the wholly enchanting The Prophet with Virginia Woolf on what makes love last, philosopher Alain Badiou on how we fall and stay in love, Anna Dostoyevskaya on the secret to a happy marriage, Mary Oliver on how differences bring couples closer together, and Joseph Campbell on the single most important factor in sustaining romantic relationships, then revisit Gibran on the seeming self vs. the authentic self and the absurdity of our self-righteousness.

BP

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