The main theory of psychedelics, first fleshed out by a Swiss researcher named Franz Vollenweider, is that drugs like LSD and psilocybin, the active ingredient in “magic” mushrooms, tune down the thalamus’ activity. Essentially, the thalamus on a psychedelic drug lets unprocessed information through to consciousness, like a bad email spam filter. “Colors become brighter , people see things they never noticed before and make associations that they never made before,” Sewell said.
LSD, or acid, and its mind-bending effects have been made famous by pop culture hits like “Fear and Loathing in Las Vegas,” a film about the psychedelic escapades of writer Hunter S. Thompson. Oversaturated colors, swirling walls and intense emotions all supposedly come into play when you’re tripping. But how does acid make people trip?
Life’s Little Mysteries asked Andrew Sewell, a Yale psychiatrist and one of the few U.S.-based psychedelic drug researchers, to explain why LSD short for lysergic acid diethylamide does what it does to the brain.
His explanation begins with a brief rundown of how the brain processes information under normal circumstances. It all starts in the thalamus, a node perched on top of the brain stem, right smack dab in the middle of the brain. “Most sensory impressions are routed through the thalamus, which acts as a gatekeeper, determining what’s relevant and what isn’t and deciding where the signals should go,” Sewell said.
“Consequently, your perception of the world is governed by a combination of ‘bottom-up’ processing, starting … with incoming signals, combined with ‘top-down’ processing, in which selective filters are applied by your brain to cut down the overwhelming amount of information to a more manageable and relevant subset that you can then make decisions about.
“In other words, people tend to see what they’ve been trained to see, and hear what they’ve been trained to hear.”
The main theory of psychedelics, first fleshed out by a Swiss researcher named Franz Vollenweider, is that drugs like LSD and psilocybin, the active ingredient in “magic” mushrooms, tune down the thalamus’ activity. Essentially, the thalamus on a psychedelic drug lets unprocessed information through to consciousness, like a bad email spam filter. “Colors become brighter , people see things they never noticed before and make associations that they never made before,” Sewell said.
n a recent paper advocating the revival of psychedelic drug research, psychiatrist Ben Sessa of the University of Bristol in England explained the benefits that psychedelics lend to creativity. “A particular feature of the experience is … a general increase in complexity and openness, such that the usual ego-bound restraints that allow humans to accept given pre-conceived ideas about themselves and the world around them are necessarily challenged. Another important feature is the tendency for users to assign unique and novel meanings to their experience together with an appreciation that they are part of a bigger, universal cosmic oneness.”
But according to Sewell, these unique feelings and experiences come at a price: “disorganization, and an increased likelihood of being overwhelmed.” At least until the drugs wear off, and then you’re left just trying to make sense of it all.
Imagine discovering a plant that has the potential to help alleviate post-traumatic stress disorder, suicidal thoughts and paralyzing anxiety. That’s what some believe ayahuasca can do, and this psychedelic drink is attracting more and more tourists to the Amazon.
If you Google “ayahuasca,” you’ll find a litany of stories about Hollywood celebrities espousing its benefits, as well as the dangers of this relatively unstudied substance that triggers hallucinations.
On this Sunday’s episode of “This Is Life,” Lisa Ling goes inside an ayahuasca ceremony in Peru and talks to the men and women who are drinking this potent brew in hopes that it will alleviate their mental and emotional traumas.
Here are six things to know about ayahuasca, which some call a drug and others call a medicine:
War vets are seeking it for PTSD
Former Marine Lance Cpl. Ryan LeCompte organizes trips to Peru for war veterans, like himself, who are seeking ayahuasca as a possible treatment for PTSD and other emotional and mental trauma suffered after multiple combat deployments.
He says he’s aware of the risks, as there’s very little known about ayahuasca’s effect on the body, but he says “it’s a calculated risk.”
“Ayahuasca is a way to give relief to those who are suffering,” says LeCompte, who says many veterans are not satisfied with the PTSD treatment they receive when they return from combat.
“It’s just, ‘Here’s a pill, here’s a Band-Aid.’ The ayahuasca medicine is a way to, instead of sweeping your dirt under the rug, you know, these medicines force you to take the rug outside and beat it with a stick until it’s clean,” LeCompte explains. “And that’s how I prefer to clean my house.”
Libby, an airman 1st class, is one of the veterans who accompanied LeCompte to Peru to try ayahuasca for her PTSD diagnosis, which includes sexual trauma while on active duty. She says antidepressants made her more suicidal.
“I would like to wish not to die all the time,” she said, when asked why she was seeking ayahuasca. “I want that to go away”
It’s endorsed by some Hollywood celebrities
As more ayahuasca centers pop up in the United States, not surprisingly, celebrities including Sting and Lindsay Lohan have spoken publicly about their experiences with the substance — albeit illegal outside of religious purposes in the United States.
Lohan, who has struggled with addiction, called her ayahuasca experience “eye-opening” and “intense.” “I saw my whole life in front of me, and I had to let go of past things that I was trying to hold on to that were dark in my life,” she said on her OWN reality series “Linsday.”
Sting said he and his wife, Trudie Styler, traveled to a church in the Amazon where they tried ayahuasca, which the British singer said made him feel like he was “wired to the entire cosmos.”
It’s not a cure
Those of have tried ayahuasca say that any benefits — like with other drugs or medicine — must be combined with therapy.
“If you think you’re just going to take ‘joy juice’ … you’re nuts,” explained author and ayahuasca expert Peter Gorman, who settled in Iquitos, Peru, during the first wave of ayahuasca tourism in the 1990s.
“The five years of work to get rid of [mental trauma] is still gonna be on you.”
Gorman, author of “Ayahuasca in My Blood,” explains that ayahuasca can help “dislodge that negative energy” and show people what their life could be like without the negativity.
“[Then] you can go back home and work on getting rid of it.”
And it used to be taken by only the shaman
Gorman says ayahuasca traditions in the Amazon have changed since Western tourists began seeking its benefits.
“Traditionally, the shaman drinks [ayahuasca], he accesses other realms of reality to find out where the dissonance is, that if the shaman corrects, will eliminate the [symptoms] — could be physical, could be emotional, could be bad luck,” Gorman explains. “[Then] we Americans come, and we said we insist on drinking the damn stuff — we want our lives changed and we want that experience, so that certainly set things right on its head.”
You can even buy ayahuasca powders and extracts online and in the local markets in the Peruvian Amazon, but Gorman warns “you don’t know what it would be.”
As more and more Western tourists consume ayahuasca, Gorman says it has him worried. “I’ve had this feeling in my bones for five or six years that something could go slightly wrong here that could sour a lot of stuff.”
Some ayahuasca tourists have died
In April, 19-year-old Briton Henry Miller died after taking part in an ayahuasca ceremony in Colombia, according to various media reports. And Kyle Nolan, an 18-year-old from northern California, died under similar circumstances in August 2012 in Peru.
The shaman who provided Nolan with the ayahuasca and who initially lied about his death was sentenced to three years in prison, his mother, Ingeborg Oswald, told CNN.
There have been other reported deaths, as well as reports of physical and sexual assaults. Writer Lily Kay Ross says she survived sexual abuse by an ayahuasca shaman.
“We have to take seriously the potential for harm alongside the huge potential for benefit,” Ross says on a video on a fundraising website for the Ethnobotanical Stewardship Council. “Standards of safety and ethics would go a long way in making sure that this kind of abuse isn’t experienced by anyone else.”
Ron Wheelock, an American shaman who leads an ayahuasca healing center in the Peruvian Amazon, says he fears there may be more deaths.
“I hate to say it, yes there probably will be,” he told Lisa Ling. “It’s in the cards”
There’s a movement to create safe ayahuasca
Through IndieGogo.com, the Ethnobotanical Stewardship Council is raising money to create a health guide for ayahuasca centers in the Amazon, so tourists know which centers are safe and harvesting the plants in a sustainable manner that supports the local communities.
The idea would be to put the ESC’s logo outside ayahuasca ceremony sites to signify those centers that meet the council’s criteria for safety and sustainability.
In addition, there are efforts to study the medicinal benefits of ayahuasca so that it can be regulated and legalized in the United States, explains Rick Doblin, executive director of the Multidisciplinary Association of Psychedelic Studies.
“At a time when drug policy is being reevaluated, when marijuana looks like it’s on the road toward legalization, when psychedelic medicine is moving forward through the FDA and we can envision a time when psychedelics are available as prescription medicines, how ayahuasca should be handled in a regulatory context is really up in the air,” Doblin said.
Humans have been ingesting mind-altering substances for a very long time. Hallucinogen-huffing bowls 2,500 years old (http://www.livescience.com/5240-ancient-family-heirlooms-snort-hallucinogens.html) have been found on islands in the Lesser Antilles, and traditional cultures from the Americas to Africa use hallucinogenic substances for spiritual purposes. Here are some notable substances that send the mind tripping.
LSD is commonly known as “acid,” but its scientific name is a mouthful: lysergic acid diethylamaide. The drug was first synthesized in 1938 from a chemical called ergotamine. Ergotamine, in turn, is produced by a grain fungus that grow on rye.
LSD was originally produced by a pharmaceutical company under the name Delysid, but it got a bad reputation in the 1950s when the CIA decided to research its effects on mind control. The test subjects of the CIA project MKULTRA proved very difficult to control indeed, and many, like counter-culture writer Ken Kesey, started taking the drug for fun (and for their own form of 1960s enlightenment).
Ayahuasca is a hallucinatory mixture of Amazonian infusions centered around the Banisteriopsis caapi vine. The brew has long been used by native South American tribes for spiritual rituals and healing, and like other hallucinogens, ayahuasca often triggers very intense emotional experiences (vomiting is also common). In 2006, National Geographic writer Kira Salak described her experience with ayahuasca in Peru for the magazine.
” I will never forget what it was like. The overwhelming misery. The certainty of never-ending suffering. No one to help you, no way to escape. Everywhere I looked: darkness so thick that the idea of light seemed inconceivable,” Salak wrote. “Suddenly, I swirled down a tunnel of fire, wailing figures calling out to me in agony, begging me to save them. Others tried to terrorize me. ‘You will never leave here,’ they said. ‘Never. Never.'”
Nonetheless, Salak wrote, when she broke free of her hallucinations, her crippling depression was alleviated. It’s anecdotal experiences like this that have led researchers to investigate the uses of hallucinogens as therapy for mental disorders such as anxiety, depression and post-traumatic stress disorder.
Peyote is a cactus that gets its hallucinatory power from mescaline. Like most hallucinogens, mescaline binds to serotonin receptors in the brain, producing heightened sensations and kaleidoscopic visions.
Native groups in Mexico have used peyote in ceremonies for thousands of years, and other mescaline-producing cacti have long been used by South American tribes for their rituals. Peyote has been the subject of many a court battle because of its role in religious practice; currently, Arizona, Colorado, New Mexico, Nevada and Oregon allow some peyote possession, but only if linked to religious ceremonies, according to Arizona’s Peyote Way Church of God.
The “magic” ingredient in hallucinogenic mushrooms is psilocybin, a compound that breaks down into psilocin in the body. Psilocin bonds to serotonin receptors all over the brain, and can cause hallucinations as well as synesthesia, or the mixture of two senses. Under the influence, for example, a person might feel that they can smell colors.
In keeping with the human tradition of eating anything that might alter your mind, people have been ingesting psilocybin-continuing mushrooms for thousands of years. Synthetic psilocybin is now under study as a potential treatment for anxiety, depression and addiction.
Best known by its street name, “angel dust,” PCP stands for phencyclidine. The drug blocks receptors in the brain for the neurotransmitter glutamate. It’s more dangerous than other hallucinogens, with schizophrenia-like symptoms and nasty side effects.
Those side effects are why PCP has no medical uses. The drug was tested as an anesthetic in the 1950s and used briefly to knock out animals during veterinary surgeries. But by the 1960s, PCP had hit the streets and was being used as a recreation drug, famous for the feelings of euphoria and invincibility it bestowed on the user. Unfortunately, a side effect of all that euphoria is sometimes truly destructive behavior, including users trying to jump out of windows or otherwise self-mutilating. Not to mention that high enough doses can cause convulsions.
Derived from the African iboga plant, ibogaine is another hallucinogen with a long history of tribal use. More recently, the drug has shown promise in treating addiction, although mostly in Mexico and Europe where ibogaine treatment is not prohibited as it is in the U.S.
Using ibogaine as therapy is tricky, however. The drug can cause heart rhythm problems, and vomiting is a common side effect. The Massachusetts-based Multidisciplinary Association for Psychedelic Research (MAPS) reports that an estimated 1 in 300 ibogaine users die due to the drug. The group is studying the long-term effects of ibogaine on patients in drug treatment programs in New Zealand and Mexico.
Salvia divinorum, also known as seer’s or diviner’s sage, grows in the cloud forest of Oaxaca, Mexico. The native Mazatec people have long used tea made out of the leaves in spiritual ceremonies, but the plant can also be smoked or chewed for its hallucinogenic effects.
Salvia is not currently a controlled substance, according to the National Institute on Drug Abuse, but it is under consideration to be made illegal and placed in the same drug class as marijuana.
Ecstasy, “E” or “X” are the street names for MDMA, or (get ready for a long one) 3,4-methylenedioxymethamphetamine. The drug acts on serotonin in the brain, causing feelings of euphoria, energy and distortions of perception. It can also nudge body temperatures up, raising the risk of heat stroke. Animal studies suggest that MDMA causes long-term and potentially dangerous changes in the brain, according to the National Institute on Drug Abuse.
MDMA was first synthesized by a chemist looking for substances to stop bleeding in 1912. No one paid the compound much mind for the next half-decade, but by the 1970s, MDMA had hit the streets. It was popular at raves and nightclubs and among those who liked their music psychedelic. Today, ecstasy is still a common street drug, but researchers are investigating whether MDMA could be used to treat post-traumatic stress disorder and cancer-related anxiety.
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