Psychedelic drug Ayahuasca creates a ‘waking-dream’ state which translates brainwaves into the sensation of ‘seeing with your eyes shut’
A South American super-drug really does blow your mind – and could provide clues about the nature of consciousness – new research reveals.
Scientists found that Ayahuasca – a ‘psychedelic brew’ made from vines and leaves in the Amazon jungle, which is popular with celebrities including Sting and Lindsay Lohan – distorts brain waves to create a vivid ‘waking-dream’ state.
The drug, often used as a traditional spiritual medicine, contains dimethyltryptamine (DMT), a hallucinogenic drug that is illegal in the UK.
Ayahuasca, which is consumed in liquid form by natives in Central and South America, is said to give consumers a ‘near-death experience’.
Chelsea Handler: ‘I had all these beautiful imageries of my childhood and me and my sister laughing on a kayak, and all these beautiful things with me and my sister. So [my experience] was very much about opening my mind to loving my sister, and not being so hard on her.’
James Scott: ‘I hallucinated for four to six hours … It was truly the most important thing I have ever done. I came back a very different person.’
Research fellow Dr Robin Carhart-Harris, head of the Centre for Psychedelic Research at Imperial College, said: ‘DMT is a particularly intriguing psychedelic.
‘The visual vividness and depth of immersion produced by high-doses of the substance seems to be on a scale above what is reported with more widely studied psychedelics such as psilocybin or “magic mushrooms”.’
The research team infused 13 volunteers with DMT, after fitting them with electroencephalogram (EEG) caps to detect the brain’s electrical activity before, during and after their trip.
They found the ‘peak psychedelic experience’ lasted around ten minutes and affected the volunteers’ alpha and theta brain waves.
Researcher Christopher Timmermann said: ‘The changes in brain activity that accompany DMT are slightly different from what we see with other psychedelics such as psilocybin or LSD, where we see mainly only reductions in brainwaves.
‘Here we saw an emergent rhythm that was present during the most intense part of the experience, suggesting an emerging order amidst the otherwise chaotic patterns of brain activity.’
They also found brain activity became chaotic and unpredictable, contrary to what is seen in states of deep sleep or general anaesthetic.
The study is the first to look at how potent psychedelics affect our waking brain activity.
Analysis revealed that DMT significantly altered electrical activity in the brain, characterised by a marked drop off in alpha waves and an increase in delta and theta waves. Red circle shows an increase in the lower frequency delta and theta waves
An illustration by one of study participants, capturing some of the visions during their DMT experience. The reserach may help to explain why people taking DMT and ayahuasca experience intense visual imagery and immersive ‘waking-dream’ like experiences.
Dr Carhart-Harris said: ‘It’s hard to capture and communicate what it is like for people experiencing DMT but likening it to dreaming while awake or a near-death experience is useful.
‘Our sense is that research with DMT may yield important insights into the relationship between brain activity and consciousness, and this small study is a first step along that road.’
The researchers hope their findings will open the door to further trials using more sophisticated tools such as functional MRI scanner.