Study found a link between finger tapping and Alzheimer's (Image via Getty Images)

Study finds a link between finger tapping and Alzheimer's

Imagine if your finger tapping ability held the key to detecting Alzheimer's disease before it takes a firm grip on your memory. Recent research, led by neuropsychologists Vincent Koppelmans and Marit Ruitenberg, brings this possibility closer to reality, offering a fresh perspective on Alzheimer's diagnosis.

Traditionally, we've linked Alzheimer's with memory lapses and severe cognitive decline. However, Koppelmans and Ruitenberg's study delves deeper into the subtler signs of this disease.


They embarked on a series of computer tests centered around something as simple as finger tapping. A diverse group participated, including 47 healthy individuals, 27 with Mild Cognitive Impairment (often a precursor to Alzheimer's), and 26 already grappling with Alzheimer's.

How is finger tapping linked with Alzheimer's?

Finger-tapping (Image via Getty Images)

The volunteers were tasked with performing various finger tapping exercises, such as tapping their right index finger as swiftly as possible for ten seconds, then transitioning to their left index finger, both fingers in unison, or alternating between them. The researchers closely analyzed the speed of tapping, the number of taps in a specified duration, and the intervals between taps.


What emerged was truly remarkable: individuals with Alzheimer's exhibited slower reaction times and tapped more slowly and erratically compared to their healthier counterparts. Even those with Mild Cognitive Impairment demonstrated less nimble finger skills. Strikingly, there was a consistent link between finger tapping performance and the size of the hippocampus, a critical brain region for memory.

What do we get out of the study?

What They Did: They asked three groups of people to tap their fingers on a computer. One group was healthy, another group had some memory issues (a sign of possible Alzheimer's), and the third group had Alzheimer's disease.

Finger-tapping (Image via Getty Images)

What They Found: It turns out, the way people tapped their fingers was different depending on which group they belonged to.

  • Healthy People: They tapped quickly and smoothly.
  • Memory-Impaired Folks: They didn't tap as well as the healthy group.
  • Alzheimer's Patients: Their tapping was slow and irregular, kind of like a stutter.

The Brain Connection: They also found that the size of a brain part called the "hippocampus" was linked to how well people tapped. The smaller the hippocampus, the worse the tapping.

What It Means: This study suggests that a simple finger-tapping test could help doctors spot Alzheimer's early, even before serious memory problems show up. It's like a sneak peek into your brain health. And this test is way cheaper and easier than the fancy brain scans doctors usually do.

In the future, your regular check-up at the doctor's office might include a quick finger tapping test to keep an eye on your brain health. It's all about catching Alzheimer's early and getting the right help sooner. This research is like a bright new flashlight in the fight against Alzheimer's disease.


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