Arizona

University of Arizona researchers explore how navigation shapes the brain

Published

5 months ago

October 15, 2025

University of Arizona researchers explore how navigation shapes the brain

When you walk across campus, drive a familiar route, or remember where you left your keys, your brain is quietly solving complex problems of space and memory.

At the University of Arizona, researchers are working to understand how these abilities change the brain and how that knowledge could someday help people facing memory loss or dementia.

The study explored how training in memory and navigation impacts brain structure and connectivity. The study was led by Dr. Arne Ekstrom, professor of psychology and director of the Human Spatial Cognition Laboratory, and Dr. Li Zheng, a research scientist, in collaboration with Dr. Steven Weisberg, professor of psychology at the University of Florida and co-senior author, as part of a partnership between the University of Arizona and the University of Texas, Arlington.

The highways of the brain

“We expected to see growth in the hippocampus because past studies showed that intensive navigation training, like what London taxi drivers experience, increases its volume,” Ekstrom said. “But what we found was that the structure itself didn’t change. Instead, the connections between brain regions did.”

A view of the virtual “mock city” where participants navigate digital streets to help researchers study how the brain maps and remembers space.

The hippocampus, a small structure deep in the brain, is critical for forming memories and navigating environments. While the volume of the hippocampus remained stable, the “highways” that link it to other regions became stronger.

“You can think of it like cities and roads,” Ekstrom explained. “We didn’t see the cities getting bigger, but the highways between them became more active. The communication between brain regions improved.”

Training the brain

For the study, young adults underwent 10 days of training designed to strengthen memory and navigation skills.

The results showed that people with larger hippocampi learned more quickly. This finding could help tailor cognitive training to individuals.

Research specialist Joshua Garren demonstrates the lab’s virtual reality treadmill setup.

While the current research focused on younger adults, Ekstrom and his team are expanding the study to include older adults to explore how aging affects these same connections.

“Older adults tend to learn a little slower, so our next step is a longer training program,” Ekstrom said. “We want to know if strengthening these connections could help preserve navigation and memory skills that often decline with age.”

Zheng said this research also offers an opportunity to compare two key areas of her work — memory and navigation — and how they interact in the brain.

“To me, it’s a good opportunity to compare two related but different topics,” she said. “I’ve been working in the episodic memory area for many years, and now that I’ve joined Dr. Ekstrom’s lab, I’ve started doing research on navigation. This study helps me understand how these two important functions in our daily lives connect and how they differ from each other.”

She added that while this study focuses on younger participants, it can still inform her long-term goal of studying aging and memory loss.

“This gives me new insight into how to understand older adults and how their spatial memory might differ,” Zheng said.

Toward rehabilitation and prevention

The findings open new questions about how short-term training might influence the brain’s memory and navigation systems over time. Ekstrom says the study reinforces a hopeful message that the brain remains capable of change even in adulthood.

A computer prompt guides participants through a virtual navigation task.

“Our long-term goal is to apply this knowledge to rehabilitation,” he said. “If we can understand how to keep the brain’s navigation system active, maybe we can slow or even prevent cognitive decline.”

For Zheng, the project is also deeply personal and scientific.

“I’ve always been fascinated by how memory works,” she said. “By comparing how memory and navigation connect in the brain, we can better understand not just how we think, but how we can help people maintain those abilities as they age.”

The path forward

Future studies will test whether memory and navigation training can translate to real-world improvements, such as finding new routes or remembering daily tasks.

“It’s one thing to see changes in the lab,” Ekstrom said. “But the big question is: can this training help people in everyday life — or even protect them from dementia? That’s what we’re working toward.”

For both researchers, the motivation is clear.

“About 15 to 20 percent of older adults will develop some form of dementia,” Ekstrom said. “If our work can make even a small difference in that, it’s worth it.”

To learn more about the Human Spatial Cognition Laboratory and its studies, click here.

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Arizona

Arizona Lottery Pick 3, Fantasy 5 results for March 1, 2026

Published

10 hours ago

March 2, 2026

Press Room

Arizona Lottery Pick 3, Fantasy 5 results for March 1, 2026

The Arizona Lottery offers multiple draw games for those aiming to win big.

Here’s a look at Sunday, March 1, 2026 results for each game:

Winning Pick 3 numbers

6-4-2

Check Pick 3 payouts and previous drawings here.

Winning Fantasy 5 numbers

01-07-11-18-28

Check Fantasy 5 payouts and previous drawings here.

Winning Triple Twist numbers

12-17-23-31-37-42

Check Triple Twist payouts and previous drawings here.

Feeling lucky? Explore the latest lottery news and results

What time is the Powerball drawing?

Powerball drawings are at 7:59 p.m. Arizona time on Mondays, Wednesdays and Saturdays.

How much is a Powerball lottery ticket today?

In Arizona, Powerball tickets cost $2 per game, according to the Arizona Lottery.

How to play the Powerball

To play, select five numbers from 1 to 69 for the white balls, then select one number from 1 to 26 for the red Powerball.

You can choose your lucky numbers on a play slip or let the lottery terminal randomly pick your numbers.

To win, match one of the 9 Ways to Win:

5 white balls + 1 red Powerball = Grand prize.
5 white balls = $1 million.
4 white balls + 1 red Powerball = $50,000.
4 white balls = $100.
3 white balls + 1 red Powerball = $100.
3 white balls = $7.
2 white balls + 1 red Powerball = $7.
1 white ball + 1 red Powerball = $4.
1 red Powerball = $4.

There’s a chance to have your winnings increased two, three, four, five and 10 times through the Power Play for an additional $1 per play. Players can multiply non-jackpot wins up to 10 times when the jackpot is $150 million or less.

Are you a winner? Here’s how to claim your lottery prize

All Arizona Lottery retailers will redeem prizes up to $100 and may redeem winnings up to $599. For prizes over $599, winners can submit winning tickets through the mail or in person at Arizona Lottery offices. By mail, send a winner claim form, winning lottery ticket and a copy of a government-issued ID to P.O. Box 2913, Phoenix, AZ 85062.

To submit in person, sign the back of your ticket, fill out a winner claim form and deliver the form, along with the ticket and government-issued ID to any of these locations:

Phoenix Arizona Lottery Office: 4740 E. University Drive, Phoenix, AZ 85034, 480-921-4400. Hours: 7:30 a.m. to 5 p.m. Monday through Friday, closed holidays. This office can cash prizes of any amount.

Tucson Arizona Lottery Office: 2955 E. Grant Road, Tucson, AZ 85716, 520-628-5107. Hours: 7:30 a.m. to 5 p.m. Monday through Friday, closed holidays. This office can cash prizes of any amount.

Phoenix Sky Harbor Lottery Office: Terminal 4 Baggage Claim, 3400 E. Sky Harbor Blvd., Phoenix, AZ 85034, 480-921-4424. Hours: 8:30 a.m. to 5 p.m. Monday through Sunday, closed holidays. This office can cash prizes up to $49,999.

Kingman Arizona Lottery Office: Inside Walmart, 3396 Stockton Hill Road, Kingman, AZ 86409, 928-753-8808. Hours: 8 a.m. to 8 p.m. Monday through Friday, 8:30 a.m. to 5 p.m. Saturday and Sunday, closed holidays. This office can cash prizes up to $49,999.

Check previous winning numbers and payouts at https://www.arizonalottery.com/.

This results page was generated automatically using information from TinBu and a template written and reviewed by an Arizona Republic editor. You can send feedback using this form.

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Arizona

Here’s how to give public comment on future Colorado River plans

Published

23 hours ago

March 1, 2026

Press Room

Here’s how to give public comment on future Colorado River plans

PHOENIX — After years of negotiations, Arizona still doesn’t know what its long-term water future will look like, and now the federal government is preparing to step in.

States across the Colorado River Basin have failed to reach a deal on how to share the shrinking river after current operating rules expire in 2026. With no state-led agreement in place, federal officials are moving forward with their own plan, one that could bring steep cuts to Arizona’s water supply.

And for Arizonans, the clock is ticking to weigh in. Public comment remains open until March 2. To submit your comment on what the government should do, send your comments in email to crbpost2026@usbr.gov.

Additional information is available online. The project website can be accessed here, along with links to YouTube videos published by the government, recorded in January and February which walk through of the options available.

Many Arizona leaders have already offered their public comments, which are overwhelmingly negative.

“We were very disappointed with that document,” said Brenda Burman, the Central Arizona Project General Manager “If any of those alternatives were implemented, it would be very difficult, and perhaps devastating for Arizona.”

Arizona’s top Colorado River negotiator, Tom Buschatzke, echoed those concerns.

“None of those alternatives are very good for the state of Arizona,” Buschatzke said. “I’m not seeing how we’re going to break that stalemate.”

Congressman Juan Ciscomani also criticized the proposals, saying the impacts of Colorado River cuts extends into Pinal, and Pima counties.

“That’s not an acceptable solution for us,” Ciscomani said. “We want to play ball, but we want to make sure everyone across the board uses less and becomes more efficient.”

Some of the federal alternatives would reduce Arizona’s Colorado River supply by 40%, 50%, or in the most extreme case up to 70%.

Experts at ASU Kyl Center for Water Policy say part of the problem lies upstream.

“The reason for this current impasse is because the upper basin states have refused to take cuts in their Colorado River use,” said Sarah Porter, the center’s director.

Upper Basin states like Colorado and Utah rely on different water rules than Arizona and other Lower Basin states, complicating negotiations that have dragged on for years.

Arizona has already been living with cuts for several years. Since 2021, the state has faced an 18% reduction in Colorado River water deliveries due to a Tier 1 shortage declaration. Most of those cuts have fallen on Central Arizona Project users, including agriculture and some tribal communities.

Buschatzke argues that pushing Arizona into deeper reductions would violate long-standing Western water law.

“We will be protecting the state of Arizona,” he said. “And if that has to be litigation, it will be litigation.”

That means a lawsuit against the federal government, or upper basin states is now a real possibility if the final plan moves forward unchanged. The state legislature has put $3 million in a state fund for potential litigation on the Colorado River.

After the comment period closes, the federal government is required to review public feedback and issue a formal ‘Record of Decision’, likely sometime this summer. Advocacy groups say public feedback matters.

“I just encourage Arizonans to look at this document, understand what that means for your family, your businesses, and what it means for the future,” said Kyle Roerink of the Great Basin Water Network. “Then figure out if you want to advocate for one scenario over another.”

A new operating plan must be in place by October 1, setting the rules for how the Colorado River will be managed for years to come, and shaping Arizona’s water future in the process.

This story was reported on-air by a journalist and has been converted to this platform with the assistance of AI. Our editorial team verifies all reporting on all platforms for fairness and accuracy.

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Arizona

Arizona Lottery Powerball, The Pick results for Feb. 28, 2026

Published

1 day ago

March 1, 2026

Press Room

The Arizona Lottery offers multiple draw games for those aiming to win big.

Here’s a look at Saturday, Feb. 28, 2026 results for each game:

Winning Powerball numbers

06-20-35-54-65, Powerball: 10, Power Play: 4

Check Powerball payouts and previous drawings here.

Winning The Pick numbers

09-12-15-25-31-35

Check The Pick payouts and previous drawings here.

Winning Pick 3 numbers

6-1-8

Check Pick 3 payouts and previous drawings here.

Winning Fantasy 5 numbers

07-10-22-30-36

Check Fantasy 5 payouts and previous drawings here.

Winning Triple Twist numbers

08-09-14-17-30-41

Check Triple Twist payouts and previous drawings here.

Feeling lucky? Explore the latest lottery news and results

What time is the Powerball drawing?

Powerball drawings are at 7:59 p.m. Arizona time on Mondays, Wednesdays and Saturdays.

How much is a Powerball lottery ticket today?

In Arizona, Powerball tickets cost $2 per game, according to the Arizona Lottery.

How to play the Powerball

To play, select five numbers from 1 to 69 for the white balls, then select one number from 1 to 26 for the red Powerball.

You can choose your lucky numbers on a play slip or let the lottery terminal randomly pick your numbers.

To win, match one of the 9 Ways to Win:

5 white balls + 1 red Powerball = Grand prize.
5 white balls = $1 million.
4 white balls + 1 red Powerball = $50,000.
4 white balls = $100.
3 white balls + 1 red Powerball = $100.
3 white balls = $7.
2 white balls + 1 red Powerball = $7.
1 white ball + 1 red Powerball = $4.
1 red Powerball = $4.

Are you a winner? Here’s how to claim your lottery prize

To submit in person, sign the back of your ticket, fill out a winner claim form and deliver the form, along with the ticket and government-issued ID to any of these locations:

Tucson Arizona Lottery Office: 2955 E. Grant Road, Tucson, AZ 85716, 520-628-5107. Hours: 7:30 a.m. to 5 p.m. Monday through Friday, closed holidays. This office can cash prizes of any amount.

Check previous winning numbers and payouts at https://www.arizonalottery.com/.

This results page was generated automatically using information from TinBu and a template written and reviewed by an Arizona Republic editor. You can send feedback using this form.

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