How cognitive baseline testing can track brain health over time

(Aging Untold) — Cognitive baseline testing offers a powerful way to measure your thinking and memory at a specific point in time, allowing you to track changes over the years and catch potential issues early.

Think of it like taking your blood pressure or checking your temperature. It’s a snapshot of how your brain is functioning right now. The earlier you establish this baseline, the better equipped you’ll be to notice meaningful changes and take action.

What is cognitive baseline testing?

“It’s like anything else. You want to have a baseline,” Dr. Rhea Rogers, a board-certified physician, explained. “And the earlier you do it, you have a baseline. It just shows a snapshot of how your brain is working right now, how you’re thinking, your focus, your different skills. And you want to do it when you’re healthy.”

Rogers compares it to routine health checks: “When you go to the doctor, you get your blood pressure taken, you get your temperature checked, you have a baseline. So if something changes, you know it and you can assess that.”

When should you consider baseline testing?

The timing depends on your individual risk factors and health history.

“If you have a family history of dementia, you might want to do that earlier — do it in your 40s or 50s or so," Rogers said. “If you had a traumatic brain injury or you get a concussion or something, you want to do it right then. Even if you have other medical conditions like cardiovascular diseases, diabetes, all those things can lead to cognitive decline, so you may want to consider those things early.”

Rogers said a comprehensive assessment will provide the entire picture of the baseline and you can determine if there has been a change.

Sam Cradduck, a gerontologist, emphasizes the importance of comprehensive testing for those with preexisting conditions.

The testing process

Professional neuropsychological testing provides the most thorough assessment. There is a four-hour test.

“There’s a profession called neuropsychology, and they’re the great profession that can help,” Amy O’Rourke, an aging expert, said. “They do it. It’s a battery. It’s a long morning or afternoon.

While comprehensive testing takes time, it provides valuable diagnostic information.

O’Rourke points out a common scenario: “You have somebody that says, no, she’s doing pretty good. She’s doing pretty good. And then you have them tested and they’re like moderate or severe, so getting tested early is so critical.”

O’Rourke cautions against relying solely on self-administered tests.

“I really discourage someone from doing it themselves and only limiting themselves to one assessment. Getting it done professionally is really helpful,” she said.

What experts are looking for

The goal isn’t to catch a sudden drop in function, but rather to identify gradual trends.

“You’re looking for a trend. You’re not looking for somebody to drop off and just fall off of a cliff,” Cradduck said. “If somebody falls off the cliff, something major has happened. That could be a stroke. That could be an injury. Something major has happened to have that sharp decline. You’re looking for trends to see if we have a progressive cause.”

A simple screening tool

For those wondering whether to pursue formal testing, there’s a helpful preliminary assessment.

“The other strategy I’ve seen used to help people know whether they need to get a test is the little clock test,” O’Rourke said. “Can you draw a clock, it’s because it pulls on so many parts of the brain — problem solving, planning. And if they really can’t draw a clock or they get anything wrong on the clock, that’s another way to say let’s get them checked out.”

Six key takeaways

1. Start early when you’re healthy. Establishing your cognitive baseline while you’re functioning well gives you the most useful comparison point for future assessments. Consider testing in your 40s or 50s if you have a family history of dementia.
2. Know your risk factors. Family history of dementia, traumatic brain injuries, concussions, cardiovascular disease and diabetes are all reasons to consider earlier baseline testing.
3. Choose professional assessment. While self-administered tests like SAGE, the Self-Administered Gerocognitive Exam, exist, comprehensive neuropsychological testing provides the most thorough and reliable baseline.
4. Look for trends, not cliffs. Cognitive decline from conditions like dementia happens gradually. Baseline testing helps identify these trends over time, while sudden drops usually indicate acute events like strokes.
5. Use simple screening tools. The clock-drawing test can help determine if you need formal testing, as it engages multiple brain functions, including problem solving and planning.
6. Don’t rely on subjective assessments. Family members often underestimate cognitive decline. Professional testing can reveal moderate or severe impairment even when loved ones report someone is “doing pretty good.”