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Posts Tagged ‘neuroscience’

Photo: Senior Swans.
The cognitive challenges of dancing ballet can help people stave off dementia.

In my retirement community, there are lots of exercise classes, and they all have something in common. They meet the needs of seniors. They may include a special exercise to keep the psoas muscle healthy so seniors don’t start shuffling when they walk. They may wake up the brain with exercises like reaching with the right arm at the same time as the left leg. Other communities use ballet, a discipline thought to be especially beneficial in the fight against dementia.

Emily Goligoski, a reporter at Harper’s Bazaar who worries about the history of dementia in her family, wrote recently about taking a Balletcore class.

She wrote, “Our instructor, dancer and choreographer Angela Trimbur ,,, tells me, ‘Whether someone remembers every step is honestly less important to me than the fact that they’re building new neuron pathways and challenging familiar patterns to shift gears. … When we’re learning choreography, we’re asking the brain to do so many things at once: remember sequences, process music, coordinate movement, adapt when we make mistakes, and stay present with other people in the room. It’s a perfect puzzle for keeping the mind fresh.’

“My intention is not to improve endurance or lower-body strength. I’m returning to the discipline to stave off the dementia that runs in my family. Seeing my paternal grandfather’s decline and considering my dementia predisposition give me anxiety, sadness, and fear of future helplessness. But being in the studio brings feelings of possibility and challenge. Could going back to ballet be the ultimate offset?

“Dementia is an umbrella term for a group of chronic neurological conditions, the most common cause being Alzheimer’s disease. For people with dementia, memory, language, problem-solving, and other coordination skills deteriorate. As a partial prevention mechanism, some people pick up crossword puzzles. I have chosen to put on ballet slippers. Dance hits on a few components — replication, recall, and creation — that make it especially relevant for preventing cognitive aging. ,,,

“I find that the coaching and collective workshopping that regular barre and floorwork classes offer is exactly the scaffolding I crave. Catalina Jackson-Urueña, the director of the Dancing Through Parkinson’s program at Invertigo Dance Theatre in Los Angeles, explains that ballet technique is among the most codified in the world of dance. ‘There’s the standard positions. There’s alignment. It’s very specific. … Jackson-Urueña’s family also has a history of neurological conditions, both Parkinson’s and Alzheimer’s, which In ballet class, I know what to expect: first, pliés, then tendus — something I’ve been doing my whole life. There’s comfort there, but it’s also challenging.’ The structure of specific components of each class (barre work is followed by stretching and sequences in the center of the class, then jumps) warm up the body and mind while offering variety that keeps dancers alert.

“Trimbur adds, ‘The people who seem most vibrant as they age don’t just keep exercising. They keep learning. They keep living in surprise. That’s what I love about choreography. It’s not repetition in the traditional fitness sense. Every week, you’re being asked to create a new map.’ …

“Lisa Mosconi, director of the Women’s Brain Initiative and Alzheimer’s Prevention Program at Weill Cornell Medicine, explains this from a neuroscience perspective: ‘Novel movement is not simply exercise. It’s exercise plus learning. And that combination appears especially powerful for maintaining brain health as we age.’

“Trimbur sees the importance of novel movement too. ‘What I’ve noticed is that many of us move through life using a surprisingly small vocabulary of movement,’ she says. ‘Dance interrupts that. It asks you to cross your body differently, change direction unexpectedly, blow around like a tree in the wind, embody different characters, respond to rhythms you wouldn’t normally choose.’

“David Leventhal, one of the founding teachers of Mark Morris Dance Group’s Dance for PD [Parkinson’s Disease] program and its current director, sees benefit for professional dancers and people with neurodegenerative disease diagnoses alike. ‘Regardless of whether you’re dancing eight hours a day or one hour a week, it’s first and foremost a mindful activity. And it’s one of the best ways that we can integrate all of our sensory awareness along with a physical awareness and physical execution.’ The neural pathways that develop out of new experiences force brain adaptation — also known as neuroplasticity — that can slow down symptom progression.”

More at Harper’s, here.

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Photo: Chewy C. Lin.
Ken Daniel, a Marshallese sailor, wears brain-recording equipment aboard a research vessel in the South Pacific.

A cool thing about scientific research today is the increased outreach to indigenous people for help with mysteries that others know little about.

Alexa Robles-Gil writes at the New York Times, about one such effort.

“When leaving an atoll of the Marshall Islands, in the Pacific, Alson Kelen prefers to sail after sunset. It’s like navigating with his eyes closed — allowing him to feel the up, down and sideways movement of every swell. ‘That’s how the Marshallese navigate,’ he said. ‘They navigate with their stomach.’

“For thousands of years, Marshallese navigators used traditional wave-piloting techniques to travel vast expanses of ocean. Wave piloting is the art of feeling and reading the swells and waves that hit and emanate from the region’s atolls. After a lifetime of studying these and other patterns, navigators pass a test devised by their chiefs to become a ri meto, or person of the sea.

“In the mid-1940s through the 1950s, nuclear testing by the American military displaced some Indigenous populations of the Marshalls. The ancient and sacred art of wave piloting was kept alive by a small group of people, among them Capt. Korent Joel, one of the last known experts in traditional navigation, who trained his younger cousin, Mr. Kelen. Captain Joel died in 2017.

“In early August, a team of international researchers, along with Marshallese sailors, set sail on a two-day voyage to study the cognitive process of way-finding at sea — and, more broadly, to help preserve the ancient art of navigation, which is having a cultural revival in the Pacific islands. Maria Ahmad, a Ph.D. student in cognitive neuroscience at University College London, devised the project after living on the Marshalls for many years. …

“Humans find their way across cities and forests by relying on visual landmarks. But the ocean, an ever-changing environment with no fixed visual markers, presents a more complex — and higher-stakes — challenge for the brain.

“A decade ago, researchers on a similar voyage documented Mr. Kelen’s understanding of the ocean as he sailed from one atoll, Majuro, to another, Aur, on a traditional Marshallese sailing canoe. The goal was to begin to understand how wave pilots successfully make their way from one destination to another despite the complexities of fluid dynamics. On board were an anthropologist, a physicist and an oceanographer, but no neuroscientists.

“This time around, the researchers hoped to answer more cognitive questions: How do people know where they are at sea? And how can that skill set be preserved? The crew comprised neuroscientists, a philosopher, a Marshallese anthropologist and two Marshallese sailors. Every 30 minutes, the people aboard the vessel had to draw their location, or at least where they thought they were, on a map — including the direction that the waves seemed to be coming from. …

“ ‘What is it that they are getting right over the rest of us?’ said Hugo Spiers, a neuroscientist at University College London who has studied navigation for more than two decades and was among the passengers. …

“Also on board were hundreds of pounds of technology: accelerometers to measure the boat’s speed; a watch on everyone’s wrist to measure heart rate; eye-tracking technology, to document where people were gazing; equipment to record brain activity relative to swell movement; a mounted 360-degree camera that captured changes in the sails and clouds; and more.

“In earlier research, Pablo Fernandez Velasco, a philosopher at the University of Stirling in Scotland, spent months in Siberia studying the Evenki people. … Dr. Fernandez Velasco has also collaborated with Dr. Spiers to study the brains of London taxi drivers, revealing just how efficiently they can plan routes. …

“The findings from the Marshall Islands voyage could also have implications for the study and diagnosis of Alzheimer’s, the researchers said. With Alzheimer’s, the hippocampus becomes smaller over time, and disorientation is an early symptom.

“That research could benefit residents of the Pacific islands, where there is a high incidence of Alzheimer’s but little public awareness. … Explaining the disease requires complex translation, added Jerolynn Neikeke Myazoe, an anthropologist and translator on the voyage: ‘We don’t really have a specific word for it.’

“Although the project is still in the early stages of processing data, Mr. Kelen, who leads a canoe and sailing school in the Marshalls, finds the project promising for the Marshallese. ‘The most relevant thing to do is look back on how our ancestors survived on these rocks,’ he said. ‘This is the only weapon we have — our tradition, our culture. He added: ‘A navigator is a culture-keeper of the ocean.’ ”

More at the Times, here. Great pictures. (A tip of the hat to Hannah for the link!)

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