« May 13, 2011 | Main | May 15, 2011 »

May 14, 2011

Daniel Kish — The blind man who taught himself to see

M203bata

Excerpts from Michael Finkel's March 2011 Men's Journal article follow.

Daniel Kish has been sightless since he was a year old. Yet he can mountain bike. And navigate the wilderness alone. And recognize a building as far away as 1,000 feet. How? The same way bats can see in the dark.

The first thing Daniel Kish does, when I pull up to his tidy gray bungalow in Long Beach, California, is make fun of my driving. “You’re going to leave it that far from the curb?” he asks. He’s standing on his stoop, a good 10 paces from my car. I glance behind me as I walk up to him. I am, indeed, parked about a foot and a half from the curb.

The second thing Kish does, in his living room a few minutes later, is remove his prosthetic eyeballs. He does this casually, like a person taking off a smudged pair of glasses. The prosthetics are thin convex shells, made of acrylic plastic, with light brown irises. A couple of times a day they need to be cleaned. “They get gummy,” he explains. Behind them is mostly scar tissue. He wipes them gently with a white cloth and places them back in.

Kish was born with an aggressive form of cancer called retinoblastoma, which attacks the retinas. To save his life, both of his eyes were removed by the time he was 13 months old. Since his infancy — Kish is now 44 — he has been adapting to his blindness in such remarkable ways that some people have wondered if he’s playing a grand practical joke. But Kish, I can confirm, is completely blind.

He knew my car was poorly parked because he produced a brief, sharp click with his tongue. The sound waves he created traveled at a speed of more than 1,000 feet per second, bounced off every object around him, and returned to his ears at the same rate, though vastly decreased in volume.

But not silent. Kish has trained himself to hear these slight echoes and to interpret their meaning. Standing on his front stoop, he could visualize, with an extraordinary degree of precision, the two pine trees on his front lawn, the curb at the edge of his street, and finally, a bit too far from that curb, my rental car. Kish has given a name to what he does — he calls it “FlashSonar” — but it’s more commonly known by its scientific term, echolocation.

Bats, of course, use echolocation. Beluga whales too. Dolphins. And Daniel Kish. He is so accomplished at echolocation that he’s able to pedal his mountain bike through streets heavy with traffic and on precipitous dirt trails. He climbs trees. He camps out, by himself, deep in the wilderness. He’s lived for weeks at a time in a tiny cabin a two-mile hike from the nearest road. He travels around the globe. He’s a skilled cook, an avid swimmer, a fluid dance partner. Essentially, though in a way that is unfamiliar to nearly any other human being, Kish can see.

Kish and a handful of coworkers run a nonprofit organization called World Access for the Blind, headquartered in Kish’s home. World Access offers training on how to gracefully interact with one’s environment, using echolocation as a primary tool. So far, in the decade it has existed, the organization has introduced more than 500 students to echolocation. Kish is not the first blind person to use echolocation, but he’s the only one to meticulously document it, to break it down into its component parts, and to figure out how to teach it. His dream is to help all sight-impaired people see the world as clearly as he does.

There are two reasons echolocation works. The first is that our ears, conveniently, are located on both sides of our head. When there’s a noise off to one side, the sound reaches the closer ear about a millisecond — a thousandth of a second — before it reaches the farther ear. That’s enough of a gap for the auditory cortex of our brain to process the information. It’s rare that we turn the wrong way when someone calls our name. In fact, we’re able to process, with phenomenal accuracy, sounds just a few degrees off-center. Having two ears, like having two eyes, also gives us the auditory equivalent of depth perception. We hear in stereo 3-D. This allows us, using only our ears, to build a detailed map of our surroundings.

The second reason echolocation works is that humans, on average, have excellent hearing. We hear better than we see. Much better. On the light spectrum, human eyes can perceive only a small sliver of all the varieties of light — no ultraviolet, no infrared. Converting this to sound terminology, we can see less than one octave of frequency. We hear a range of 10 octaves.

Kish does not go around clicking like a madman. He uses his click sparingly and, depending on his location, varies the volume. When he’s outside, he’ll throw a loud click. In good conditions, he can hear a building 1,000 feet away, a tree from 30 feet, a person from six feet. Up close, he can echolocate a one-inch diameter pole. He can tell the difference between a pickup truck, a passenger car, and an SUV. He can locate trail signs in the forest, then run his finger across the engraved letters and determine which path to take. Every house, he explains, has its own acoustic signature.

He can hear the variation between a wall and a bush and a chain-link fence. Bounce a tennis ball off a wall, Kish says, then off a bush. Different response. So too with sound. Given a bit of time, he can echolocate something as small as a golf ball. Sometimes, in a parking garage, he can echolocate the exit faster than a sighted person can find it.

When it’s all put together, says Kish, he has very rich, very detailed pictures in his head.

“In color?” I ask.

“No,” he says. “I’ve never seen color, so there’s no color. It’s more like a sonar, like on the Titanic.”

He attended the University of California Riverside, then earned two master’s degrees — one in developmental psychology, one in special education. He wrote a thesis on the history and science of human echolocation, and as part of that devised one of the first echolocation training programs. The ability of some blind individuals to perceive objects well before they could touch them was noted as early as 1749 by French philosopher Denis Diderot. He theorized it had something to do with vibrations against the skin of the face. In the early 1800s, a blind man from England named James Holman journeyed around the world — he may have been the most prolific traveler in history up to that point, Magellan and Marco Polo included — relying on the echoes from the click of his cane. Not until the 1940s, in Karl Dallenbach’s lab at Cornell University, was it irrefutably proven that humans could echolocate.

The thesis was the first time Kish really studied what he’d been doing all his life; it was the beginning, as he put it, of “unlocking my own brain.” He then became the first totally blind person in the United States (and likely the world) to be fully certified as an orientation and mobility specialist — that is, someone hired by the visually impaired to learn how to get around.

 

 

May 14, 2011 at 04:01 PM | Permalink | Comments (4) | TrackBack

Wood Log Lamp

Detail_204_loglamp2

"White porcelain wood log lamp with unglazed finish casts a soft glow."

Large_204_loglamp1

By New York artist Michiko Shimada.

9" long x 6" tall x 4" wide.

$120.

 

May 14, 2011 at 03:01 PM | Permalink | Comments (2) | TrackBack

What color is your idiom?

Sdfg

Alan Kennedy's Color/Language Project aims to illustrate with colors idioms in different languages featuring allusions to colors.

You can view the idioms as a single page here.

Linguistic facts about color here.

It would be interesting to hear from synesthetes how they experience color-related idioms.

[via Milena]

May 14, 2011 at 02:01 PM | Permalink | Comments (2) | TrackBack

Pharrell Williams' Tank Chair

33

At 

55

Galerie Perrotin

44

in Paris.

22

Apply

77

within.

[via Fancy]

May 14, 2011 at 01:01 PM | Permalink | Comments (1) | TrackBack

"Modernist Cuisine" — The Errata

Asdfgh

Excerpts from Indrani Sen's April 29, 2011 New York Times story follow.

For those of us who don't have the $625 (or the upper-body strength) to buy "Modernist Cuisine"," the six-volume, 40-pound high-tech food encyclopedia released with great fanfare last month, the 12 pages of corrections and clarifications that went up on the book's Web site last week is worth a read for its own sake.

At times the errata read like science fiction — fleeting glimpses into the world of "beet flexicurd," "halibut cheek gel base" and "scallop mochi." It's a place where oysters, before they meet their demise, are fed sieved beet juice (and the juice should be strained through a 25-micron sieve, not a 500-micron one).

Although many of the more than 350-odd corrections are typos or small mistakes, some — a 10-minute difference in the cooking time of "French scrambled eggs" or a six-minute difference in the baking time of Pringles-style "restructured" potato chips — could affect the recipes' success.

Some of the notes seem like parody: "The recipe for Foie Gras Cherries should call for 0.6 g of xanthan gum," we are told. "The recipe should also call for 18 foie gras parfait spheres." And "the recipe for Sous Vide Pigeon Offal should call for 150 g of pigeon gizzards with a scaling of 150% and 50 g of rendered duck fat with a scaling of 50%."

Corrections are still coming in. The list released on April 21 included 331 pages with corrections on them, but the latest update, on April 26, lists 368 pages with corrections. Readers can e-mail additional corrections to info@modernistcuisine.com.

 

May 14, 2011 at 12:01 PM | Permalink | Comments (1) | TrackBack

Hello Kitty Blue Skies Socks

1

 

3

 

2

$14.99.

May 14, 2011 at 11:01 AM | Permalink | Comments (0) | TrackBack

The night sky — in 37,440 exposures

Sdfgh

Long story short: "Nick Risinger has always gazed up at the sky. But last year the amateur astronomer and photographer quit his day job as a Seattle marketing director and lugged six synchronized cameras about 60,000 miles to capture an image of the entire night sky."

"He... stitched 37,440 exposures together into a spectacular panoramic sky survey that he posted online two weeks ago. The photo reveals a 360-degree view of the Milky Way, planets and stars in their true natural colors."

[via Yahoo! News and Richard Kashdan]

May 14, 2011 at 10:01 AM | Permalink | Comments (3) | TrackBack

LED Circuit Board Tie

Elecdarkx600-1

Made to order with 5-count 'em-5 LEDs.

"These ties are powered by two small coin cell batteries held in a pocket on the back of the tie."

2

Video of the tie in action here.

Details here.

Elecdet2x600

$75.

[via LDJ and GeekAlerts]

May 14, 2011 at 09:01 AM | Permalink | Comments (0) | TrackBack

« May 13, 2011 | Main | May 15, 2011 »