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Hello, my name is Dessa,
and I'm a member of a hip-hop collective called Doomtree.
I'm the one in the tank top.
(Laughter)
And I make my living as a performing, touring rapper and singer.
When we perform as a collective, this is what our shows look like.
I'm the one in the boots.
There's a lot of jumping. There's a lot of sweating.
It's loud. It's very high-energy.
Sometimes there are unintentional body checks onstage.
Sometimes there are completely intentional body checks onstage.
It's kind of a hybrid between an intramural hockey game and a concert.
However, when I perform my own music as a solo artist,
I tend to gravitate towards more melancholy sounds.
A few years ago, I gave my mom the rough mixes of a new album,
and she said, "Baby, it's beautiful, but why is it always so sad?"
(Laughter)
"You always make music to bleed out to."
And I thought, "Who are you hanging out with that you know that phrase?"
(Laughter)
But over the course of my career, I've written so many sad love songs
that I got messages like this from fans:
"Release new music or a book. I need help with my breakup."
(Laughter)
And after performing and recording and touring those songs for a long time,
I found myself in a position
in which my professional niche was essentially romantic devastation.
What I hadn't been public about, however,
was the fact that most of these songs had been written about the same guy.
And for two years, we tried to sort ourselves out,
and then for five
and on and off for 10.
And I was not only heartbroken,
but I was kind of embarrassed that I couldn't rebound
from what other people seemed to recover from so regularly.
And even though I knew it wasn't doing either of us any good,
I just couldn't figure out how to put the love down.
Then, drinking white wine one night,
I saw a TED Talk by a woman named Dr. Helen Fisher,
and she said that in her work, she'd been able to map the coordinates of love
in the human brain.
And I thought, well, if I could find my love in my brain,
maybe I could get it out.
So I went to Twitter.
"Anybody got access to an fMRI lab,
like at midnight or something?
I'll trade for backstage passes and whiskey."
(Laughter)
And that's Dr. Cheryl Olman,
who works at the University of Minnesota's Center for Magnetic Resonance Research.
She took me up on it.
I explained Dr. Fisher's protocol,
and we decided to recreate it with a sample size of one, me.
(Laughter)
So I got decked out in a pair of forest green scrubs,
and I was laid on a gurney
and wheeled into an fMRI machine.
If you're unfamiliar with that technology,
essentially, an fMRI machine is a big, tubular magnet
that tracks the progress of deoxygenated iron in your blood.
So it's essentially figuring out what parts of your brain
are making the biggest metabolic demand at any given moment.
And in that way, it can figure out
which structures are associated with a task,
like tapping your finger, for example, will always light up the same region,
or in my case,
looking at pictures of your ex-boyfriend
and then looking at pictures of a dude who just sort of resembled my ex-boyfriend
but for whom I had no strong feelings.
He was the control.
(Laughter)
And when I left the machine,
we had these really high-resolution images of my brain.
We could cleave the two halves apart.
We could inflate the cortex to see inside all of the wrinkles, essentially,
in a view that Dr. Cheryl Olman called the "brain skin rug."
(Laughter)
And we could see how my brain had behaved when I looked at images of both men.
And this was important.
We could track all of the activity
when I looked at the control and when I looked at my ex,
and it was in comparing these data sets that we'd be able to find the love alone,
in the same way that, if I were to step on a scale fully dressed
and then step on it again naked,
the difference between those numbers would be the weight of my clothing.
So when we did that data comparison, we subtracted one from the other,
we found activity in exactly the regions that Dr. Fisher would have predicted.
That's me.
And that's my brain in love.
There was activity in that little orange dot, the ventral tegmental area,
that kind of loop of red is the anterior cingulate
and that golden set of horns is the caudates.
After she had had time to analyze the data with her team
and a couple of partners, Andrea and Phil,
Cheryl sent me an image, a single slide.
It was my brain in cross section,
with one bright dot of activity
that represented my feelings for this dude.
And I'd known I was in love,
and that's the whole reason I was going to these outrageous lengths.
But having an image that proved it felt like such a vindication,
like, "Yeah, it's all in my head, but now I know exactly where."
(Laughter)
And I also felt like an assassin who had her mark.
That was what I had to annihilate.
So I decided to embark on a course of treatment
called "neurofeedback."
I worked with a woman named Penijean Gracefire,
and she explained that what we'd be doing was training my brain.
We're not lobotomizing anything.
We're training it in the way that we would train a muscle,
so that it would be flexible enough and resilient enough
to respond appropriately to my circumstances.
So when we're on the treadmill, we would anticipate
that our heart would beat and pound,
and when we're asleep, we would ask that that muscle slow.
Similarly, when I'm in a long-term, viable, loving romantic relationship,
the emotional centers of my brain should engage,
and when I'm not in a long-term, viable, emotional, loving relationship,
they should eventually chill out.
So she came over with a set of electrodes just smaller than a dime
that were sensitive enough to detect my brainwaves
through my bone and hair and scalp.
And when she rigged me up, I could see my brain working in real time.
And in another view that she showed me,
I could see exactly which parts of my brain were hyperactive,
here displayed in red;
hypoactive, here displayed in blue;
and the healthy threshold of behavior,
the green zone, the Goldilocks zone,
which is where I wanted to go.
And we can, in fact, isolate just those parts of my brain
that were associated with the romantic regulation
that we'd identified in the Fisher study.
So Penijean, several times,
hooked me up with all her electrodes,
and she explained that I didn't have to do or think anything.
I just essentially had to hold pretty still
and stay awake
and watch.
(Harp and vibraphone sounds play)
So I did.
And every time my brain operated in that healthy threshold,
I got a little run of harp or vibraphone music.
And I just watched my brain rotate at roughly the speed of a gyro machine
on my dad's flat-screen TV.
And that was counterintuitive.
She said the learning would be essentially unconscious.
But then I thought about the other things I had learned
without actively engaging my conscious mind.
When you ride a bike,
I don't really know what, like, my left calf muscle is doing,
or how my latissimus dorsi knows to engage when I wobble to the right.
The body just learns.
And similarly, Pavlov's dogs probably don't know a lot about, like,
protein structures or the waveform of a ringing bell,
but they salivate nonetheless because the body paired the stimuli.
Finished the sessions,
went back to Dr. Cheryl Olman's fMRI machine,
and we repeated the protocol,
the same images --
of the ex, of the control and, in the interest of scientific rigor,
Cheryl and her team didn't know who was who,
so that they couldn't influence the results.
And after she had time to analyze that second set of data,
she sent me that image.
She said,
"Dude A's dominance of your brain
seems to essentially have been eradicated.
I think this is the desired result," comma, yes, question mark.
(Laughter)
And that was the exactly the desired result.
And finally, I allowed myself a moment to introspect,
like, how did I feel?
And in one way, it felt like
it was the same inventory of feelings that I'd had at the outset.
This isn't "Eternal Sunshine of the Spotless Mind."
The dude wasn't a stranger.
But I'd had love and jealousy and amity and attraction and respect
and all those complicated feelings that you amass after long-term love.
But it felt like the benevolent feelings had risen to the surface,
and the feelings of fixation and the less-generous feelings
weren't quite so present.
And that sounds like a small thing in some way,
this resequencing of feelings,
but to me it felt like the biggest thing.
Like, if I told you,
"I'm going to anesthetize you,
and I'm also going to take out your wisdom teeth,"
it would really matter to you the sequence in which I did those two things.
(Laughter)
And I also felt like
I'd had this really unusual philosophical privilege
to understand love.
The lab offered to 3D-print my caudate.
I got to hold love in my hand.
(Laughter)
And then I bronzed it,
and I made it into a necklace and sold it at the merch table at my shows.
(Laughter)
(Applause)
And then, with the help of a couple of friends back in Minneapolis,
one of them Becky,
we made an enormous disco ball of it --
(Laughter)
that could descend from the ceiling at my big shows.
And I felt like I'd had the opportunity to better understand love,
even the compulsive parts.
It isn't a neat, symmetrical Valentine's heart.
It's bodily, it's systemic,
it is a hideous pair of ram's horns buried somewhere deep within your skull,
and when that special boy walks by,
it lights up,
and if he likes you back and you make each other happy,
then you fan the flames.
And if he doesn't,
then you assemble a team of neuroscientists
to snuff them out by force.
(Laughter)
Thanks.
(Applause)
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【TED】Can we choose to fall out of love? | Dessa

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林宜悉 2019 年 9 月 25 日 に公開

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