Wednesday, October 7, 2009

Dim the House Lights, Raise the Smells


On the Los Angeles Times Culture Monster blog, Diane Haithman writes about an upcoming scented theater production. It’s Kenneth Lin’s Po Boy Tango which is being premiered by the East West Players at LA’s David Henry Hwang Theater.

During the show, which has a cooking theme, the theater plans to pipe into the house the actual scents of traditional Chinese cooking—ginger, garlic and such.
Neato! 

To Haithman it’s reminiscent of 1960’s Smell-O-Vision, but fans of What the Nose Knows will have a longer view:
The innovative American director and stage designer David Belasco was an early adopter of olfactory special effects. In 1897, he directed a play set in San Francisco’s Chinatown. His staging impressed the New York Times: “The senses of sight, hearing, and smell are violently appealed to for the sake of creating an illusion; for the perfume of Chinese punk fills the theatre and the music is as Chinese as possible.” . . .

In 1912 he created a detailed stage replica of a Child’s Restaurant (a then-famous New York chain), complete with a working stovetop on which the restaurant’s specialty pancakes were prepared during the show.
Tickets and performance dates for Po Boy Tango are available here. To get to the Hwang Theater from the beach, take the 10 to the 110 to the 5 and exit at Los Angeles Street.

(How I envy the precision of LA driving directions. Nothing similar is possible in NJ.)

Tuesday, October 6, 2009

BUMP: Your Brain on BO


Psychologist and smell researcher Bettina Pause has commented on my earlier post about her BO study. She explains why her team does, in fact, think that smelling an anxious person transmits the anxiety to the smeller. Well worth reading.

Nasal NIMBYism: Ginkgobilobaphobia Sweeps America

Photo by Fritz Geller-Grimm.

The Telegraph’s “environment correspondent” Louise Gray writes about a growing backlash against gingko stink in the US. According to Ms. Gray,
In some US cities the trees are now being cut down for fear of pedestrians slipping on the fruit or because of complaints about the smell.
She says Easton, Pennsylvania, Bloomington, Minnesota, and Lexington, Kentucky have all banned female gingko trees.

So how bad is the smell? I described it in an American Smellscapes post:
My smell memories of Philly fester to this day. The streets between my apartment and the psych lab were lined with gingko trees and their ripe fruit would fall on the sidewalk and rot, giving off the stench of butyric acid (think stinky feet to the fifth power).
I should note that fetid gingko fruit has its fans. As I gingerly made my way to campus I would pass several old Chinese ladies gathering the stuff into garbage bags. They weren’t being altruistic: apparently they would cook off the smelly pulp and roast the tasty seeds.

Louise Gray’s article illustrates the cognitive dissonance experienced by the ecologically enlightened when they encounter a really bad smell. They can’t openly advocate the sex-based elimination of half a nonhuman species, no matter how stinky. So instead they promote the planting of more male trees to atone for the affront to Mother Gaia.
Guy Barter, Head of Gardening Advice at the Royal Horticultural Society, said more ginkgo were also likely to be planted in Britain in the future.

“With climate change they would be a good choice for the hotter, drier summers. We just have to make sure we plant male ones,” he said.
You have to love climate change: it can justify almost any social policy . . .

P.S. Ms. Gray is under the impression that Gingko biloba can spontaneously change sex. This is news to me, but I’m not a botanist. If true, it would knock Guy Barter's eco-atonement into a cocked hat. Any tree people out there care to comment?

Monday, October 5, 2009

A Ghostly Scent from Long Ago


It’s October, the days are growing shorter, the moon is full, and Halloween is not far off. What better time for a sentimentally fragrant ghost story?

One hundred and thirty-eight years ago this month, Bret Harte published a poem called “A Newport Romance” in The Atlantic Monthly. Harte, who made his bones with “The Luck of Roaring Camp” and other stories set in the California Gold Rush, was thirty-five years old at the time. He had just signed a record-setting $10,000 a year deal with the magazine to publish one story a month, and would soon give up his professorship at the University of California to move back East.

Harte’s poem is told by a fellow who lives in a haunted house by the seaside in Newport, Rhode Island. The spirit that lingers there is that of a previous owner, an elderly spinster who died waiting for her lover to return. 
And ever since then, when the clock strikes two,
She walks unbidden from room to room,
And the air is filled that she passes through
With a subtle, sad perfume.

The delicate odor of mignonette,
The ghost of a dead-and-gone bouquet,
Is all that tells of her story; yet
Could she think of a sweeter way?
Who is this lady? Is the setting of an old house in Newport just an arbitrary poetic fancy? Hardly. 

One hundred years earlier—in the summer of 1781—the Comte de Rochambeau and six thousand French soldiers arrived to aid the American Revolution. Rochambeau’s men camped in the fields of Newport and his officers were billeted in private homes in town, where they were well-received and entertained by the local Yankees. Rochambeau and his men left town in July, 1781 to join forces with George Washington and begin the siege of Yorktown. By October, Rochambeau and his countryman the Marquis de Lafayette had helped the Continental Army defeat Lord Cornwallis and the British. So Harte’s poetic story lines up nicely with historical fact. His love-struck Quaker lady of Newport met and fell in love with a French soldier under the command of Rochambeau.

But why the ghostly scent? Her Frenchman gave her scented bouquets which she kept as she waited for his return.
But she kept the posies of mignonette
That he gave; and ever as their bloom failed
And faded (though with her tears still wet)
Her youth with their own exhaled.
She would wait in vain until the end of her life—and even after, if the ghost story is to be believed. The narrator, evidently living alone in “this sad old house,” waits for the clock to strike two then sniffs expectantly:
Was it the trick of a sense o’erwrought
With outward watching and inward fret?
But I swear that the air just now was fraught
With the odor of mignonette!
He opens a window and gazes out at the ocean and at a nearby gas-lit house where a happy dance party is in progress—a scene that painfully contrasts with the loneliness of his sad old house. He sniffs again and comes to an exquisite olfactory insight:
And no odor of mignonette there is,
But the breath of morn on the dewy lawn;
And mayhap from causes as slight as this
The quaint old legend is born.
There you have it—the psychology of odor expectation in rhyming verse.

But wait, there’s more! Nearly a half century before Marcel Proust publishes his over-praised, madeleine-cued olfactory memories, Harte gives us the real deal:
But the soul of that subtle, sad perfume,
As the spiced embalmings, they say, outlast
The mummy laid in his rocky tomb,
Awakens my buried past.

And I think of the passion that shook my youth,
Of its aimless loves and its idle pains,
And am thankful now for the certain truth
That only the sweet remains.
Here Harte strikes a melancholy note so often found in poems and stories about remembered smells. Faded scent and faded memory are both elusive; we yearn to experience them vividly in the here-and-now, and are saddened by our inability to conjure the past. At the same time, their recollection brings us some small measure of happiness, selectively filtered by time.

Saturday, October 3, 2009

Eye-opening Scents


When aromatherapy was starting to show up on the fragrance industry’s radar back in the 1990s, there was much interest in “objective” ways to measure mood response to scent. This was driven in part by the analytical chemistry mentality of corporate R&D departments. They demanded tangible evidence—a GC trace or a weighable reaction product qualified, mood questionnaires did not.

The upshot was a modest bunch of papers on reactions to fragrance using heart rate, blood pressure, Galvanic Skin Response (sweaty palms), EEG (brainwaves) and other methods from the psychophysiologist’s toolbox. The results were sometimes suggestive but they never evolved into the corporate marketer’s dream: a precise and accurate picture of what consumers thought when smelling a given scent. (It turns out that the best way to assess a person’s mood is just to ask him using standardized scales. Try telling that to a chemist.)

I was reminded of all this by an excellent new study from the University of Dresden. The Dresden team used an infrared pupillograph to measure a test subject’s pupil as he smelled various aromas. Pupil diameter is a sensitive and reliable index of activity in the sympathetic nervous system. For example, the pupil dilates in response to painful stimulation.

The main experiment smells were carefully selected. Phenylethyl alcohol smells like roses and is a “pure” olfactory stimulus. In other words, no matter how high the concentration it does not activate trigeminal nerve endings in the nose, those fibers responsible for sensing irritation or pain. Carbon dioxide is a “pure” trigeminal stimulus. It has no discernable odor, yet at sufficient concentration can tickle or even sting the nasal tissues via activation of the trigeminal nerve endings.

In the Dresden experiment each test subject sat with his head on a chin rest and stared at a spot about five feet away. Stimuli were delivered directly into his nose by a computer controlled olfactometer while the pupillograph recorded the diameter of his pupil. After the eyeball session, subjects rated the smells for intensity and pleasantness using standard 11-point rating scales (“just ask him”).

The results showed that the pupil responds to odor intensity but not odor quality. Pupil dilation was greatest in response to a higher level of carbon dioxide and least in response to any level of rose alcohol. The stronger the odor intensity, the faster the pupil changed size. The perceived pleasantness or unpleasantness of the stimulus made no difference to pupil dilation or response speed.

This is well done study that will set a new standard in the somewhat messy field of olfactory psychophysiology. It’s another reminder that we respond rapidly and unconsciously to nasal stimulation. But even though it’s a clean and satisfying scientific result, I’m afraid it will not set any fragrance marketer’s hair on fire. (“The new Calvin Klein—now with 17% more pupil power!”) But it ought to be enough to keep the chemists quiet.