News / USA

Brain Researchers Uncover Secrets of Memory

Brain Researchers Uncover Secrets of Memoryi
X
February 21, 2013 1:38 AM
Much research on the human brain is focused on understanding how people form memories, store them and retrieve them. Now, a study by scientists at the University of California-Davis and the University of Texas Health Science Center in Houston is providing new insight into the process. As VOA's Greg Flakus reports, researchers at the two schools found that separate areas of the brain coordinate much like little radio stations -- to form memories involving time and space.

Brain Researchers Uncover Secrets of Memory

Greg Flakus
Much research on the human brain is focused on understanding how people form memories, store them and retrieve them. Now, a study by scientists at the University of California-Davis and the University of Texas Health Science Center in Houston is providing new insight into the process. Researchers at the two schools found that separate areas of the brain coordinate much like little radio stations - to form memories involving time and space.

In Memorial-Hermann hospital at the University of Texas Medical Center in Houston, Neurosurgeon Nitin Tandon visits 26-year-old epilepsy patient Tyler.

Dr. Tandon has placed platinum electrodes on the surface of Tyler's brain so that he can monitor electrical signals when Tyler is having a seizure.

"Before we can even understand how we would come up with prosthetic devices that we may be able to use to supplant certain brain functions that have been lost, we have to model those and understand those at a computational level," Tandon said.

Since such studies contribute to the understanding of epilepsy, Tyler is a willing participant.

"I think the more education there is about it, the better off the rest of the people will be," Tyler said.

Patients like Tyler have also contributed to a study of how the brain forms memories of events in terms of time and space.

“It has been a puzzle how the brain communicates both with the "where" and the "when" areas,” Tandon said.

Dr. Tandon had patients with implanted electrodes carry out learning tasks that involved both space and time to see how the brain handled the information.

"The way the brain does this, that it accomplishes communication with these two different areas at the same time, is by using two different frequencies coming from the same part of the brain, the hippocampus," he said.

The hippocampus is a structure on the lower side of the brain that regulates the formation of memories that are then stored in separate areas of the brain.

“It is very much like saying that you have a radio station that is sending out signals to two different groups of listeners at the same time and it does that by using two different frequencies,” Tandon said.

At the University of California, Davis, neuroscientist Arne Ekstrom analyzed data from the brain scans -- applying graph theory techniques used to study information flow.

He, Tandon and their colleagues hope to pursue this investigation in future studies.

Since memory loss is one of the problems associated with epilepsy, Dr. Tandon says this research holds promise for epileptics as well.

“We are setting ourselves up for being able to restore memory dysfunction much better than we have with these electrodes in patients with epilepsy and also, potentially, at some point, being able to restore normal network dynamics,” Tandon said.

Dr. Tandon hopes that one day such advances could help epileptic patients like Tyler lead more normal lives.

You May Like

As US Strikes Syria, China Sees Parallels at Home

Beijing is debating how much support to give international coalition against IS militants and trying to figure out how many Chinese nationals may have joined group overseas More

CDC: Ebola Could Infect 1.4 M by 2015

US health officials say if efforts to curb the outbreak are not increased, cases will soar dramatically by early next year More

Video USAID Provides $231 Million for Girls Education in 5 Countries

US Agency for International Development partners with celebrities to call attention to importance of education for girls worldwide More

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Washington to Pyongyang: 'Shut This Evil System Down'i
X
Scott Stearns
September 23, 2014 10:52 PM
U.S. Secretary of State John Kerry is calling on North Korea to shut down prison camps and other human rights abuses following a United Nations Commission of Inquiry into "widespread and systematic human rights violations." VOA State Department Correspondent Scott Stearns reports from the United Nations.
Video

Video Washington to Pyongyang: 'Shut This Evil System Down'

U.S. Secretary of State John Kerry is calling on North Korea to shut down prison camps and other human rights abuses following a United Nations Commission of Inquiry into "widespread and systematic human rights violations." VOA State Department Correspondent Scott Stearns reports from the United Nations.
Video

Video US, Gulf Allies Strike Islamic State Militants in Syria

United States forces have carried out strikes against Islamic State or ISIL militant positions in Syria - the first time Western forces have taken action on Syrian soil. Five U.S. allies from the Gulf joined the military action. Local reports suggest dozens of militants were killed. The U.S. also carried out unilateral missile strikes against a Syria-based terror group which Washington says poses an imminent threat to the West. Henry Ridgwell reports from London.
Video

Video High Intensity Focused Ultrasound Used to Kill Cancer Tumor

There is a new way of killing certain cancer tumors that allows the patient to go home on the same day. Surgeons at the Keck Medical Center of the University of Southern California became the first doctors to use this procedure on a patient with the help of high intensity focused ultrasound, or HIFU, and new robotic technology. Elizabeth Lee reports from Los Angeles.
Video

Video USAID Provides $231 Million for Girls Education in Five Countries

Hollywood stars Alicia Keys, Jennifer Garner and 30 others have voiced their support for a U.S.-backed initiative called "Let Girls Learn." The $231 million program, funded by the U.S. Agency for International Development, is aimed at ensuring public and quality education for girls worldwide. As VOA's Mariama Diallo reports, this new program will focus on five countries in Africa, South Asia, Latin America and the Middle East.
Video

Video UN: Relocation of Bedouins in Israel Weakens Two-state Solution

Rural Bedouins living in disputed lands east of Jerusalem could soon find themselves forcibly relocated. VOA's Sharon Behn reports from Jerusalem that while Israel defends the move as in the Bedouins’ best interests, the United Nations says the plan threatens the survival of the two-state solution with Palestinians.
Video

Video NASA’s MAVEN Probe Enters Mars Orbit

NASA’s newest Mars probe, called MAVEN, has successfully entered its designated orbit around the Red Planet. Scientists will use its sophisticated instruments to try to learn what happened to the atmosphere Mars had a few billion years ago. VOA’s George Putic has more.
Video

Video Prolonged Drought Plagues SW Oklahoma Farmers

Parts of western Texas and southwestern Oklahoma have been in drought conditions for several years running and the deficit in rainfall has taken a heavy toll on cotton and grain production. Oklahoma Governor Mary Fallin says the state has suffered $2 billion in agricultural losses since 2011. There has been rain in recent weeks, but, as VOA’s Greg Flakus reports from Altus, Oklahoma, for most farmers it has been too late.
Video

Video For West Ukraine City, Conflict Far Away Yet Near

The western Ukrainian city of Lviv prides itself on being both physically and culturally close to Western Europe. The Russian-backed separatists in the eastern part of the country are 1,200 kilometers away, and seemingly even farther away in their world view. Still, as VOA’s Al Pessin reports, the war is having an impact in Lviv.
Video

Video Saving Global Fish Stocks Starts in the Kitchen

With an estimated 90 percent of the world’s larger fish populations having already vanished, a growing number of people in the seafood industry are embracing the concept of sustainable fishing and farming practices. One American marine biologist turned restaurateur in Thailand is spreading the word among fellow chefs and customers. VOA Correspondent Steve Herman reports from Bangkok.
Video

Video Chinese Admiral Key in China’s Promotion of Sea Links

China’s President last week wrapped up landmark visits to India, Sri Lanka and Maldives, part of a broader campaign to promote a new “Maritime Silk Road” in Asia. The Chinese government’s promotion efforts rely heavily on the country’s best-known sailor, a 15th century eunuch named Zheng He. VOA's Bill Ide reports from the sailor’s hometown in Yunnan on the effort to promote China’s future by recalling its past.
Video

Video Experts Fear Ebola Outbreak ‘Beyond Our Capability to Contain’

Each day brings with it new warnings about the deadly Ebola outbreak already blamed for killing more than 2,600 people across West Africa. And while countries and international organizations like the United Nations are starting to come through on promises of help for those most affected, the unprecedented speed with which the virus has spread is raising questions about the international response. VOA's Jeff Seldin has more from Washington.
Video

Video Migrants Caught in No-Man's Land Called Calais

The deaths of hundreds of migrants in the Mediterranean this week has only recast the spotlight on the perils of reaching Europe. And for those forunate enough to reach a place like Calais, France, only find that their problems aren't over. Lisa Bryant has the story.
Colonel Steve ‘Spiros’ Pisanos left Greece and came to the U.S. to learn to fly. He flew fighters for the Allies in World War II, narrowly escaping death multiple times.Colonel Steve ‘Spiros’ Pisanos left Greece and came to the U.S. to learn to fly. He flew fighters for the Allies in World War II, narrowly escaping death multiple times.

AppleAndroid