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American Focus > Blog > Tech and Science > A Hidden Pattern in Your Pulse Could Signal Future Cognitive Decline : ScienceAlert
Tech and Science

A Hidden Pattern in Your Pulse Could Signal Future Cognitive Decline : ScienceAlert

Last updated: May 24, 2025 1:25 pm
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A Hidden Pattern in Your Pulse Could Signal Future Cognitive Decline : ScienceAlert
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New Study Suggests Pulse Rate Could Predict Cognitive Decline

A recent study has revealed that subtle changes in an individual’s pulse rate could potentially indicate the likelihood of future cognitive decline. This groundbreaking research offers a promising new avenue for detecting cognitive issues early on, providing valuable insights that could lead to improved support and interventions for those at risk.

Researchers have long been focused on understanding the onset and progression of cognitive decline, as it not only aids in better care for affected individuals but also sheds light on the underlying mechanisms of these conditions and potential ways to prevent or slow down their development.

The study involved analyzing pulse rate data collected during sleep from 503 participants with an average age of 82. Cognitive assessments were conducted concurrently and during follow-up visits to track any changes over time.

The researchers utilized a statistical model known as distribution entropy to assess the complexity of pulse rate patterns and their association with future cognitive decline. The results indicated that higher pulse rate complexity, reflecting greater variability and adaptability, was linked to slower cognitive decline in older adults. Conversely, reduced complexity was associated with a faster decline in cognitive function.

According to the researchers, further investigations are needed to explore whether pulse rate complexity could also serve as a predictor for neurodegenerative disorders like dementia, and to establish the causal relationship between these factors.

Itamar WatchPAT 300 device
The pulse oximeter used in the study. (Itamar Medical Inc)

The concept behind distribution entropy lies in the idea that a more adaptable heart indicates overall better health. A heart that exhibits complex variations in response to internal and external stimuli operates more efficiently, similar to how a skilled runner adjusts pace and direction during a race.

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Previous studies have hinted at a connection between heart rate variability and cognitive function, but this novel approach of analyzing pulse rate complexity appears to offer deeper insights, potentially identifying early signs of cognitive impairment before symptoms become apparent.

Biomedical engineer Peng Li from Massachusetts General Hospital emphasizes that heart rate complexity is a key indicator of physiological health, reflecting the heart’s ability to balance spontaneity and adaptability in response to various demands.

Unlike traditional heart rate measures, distribution entropy showed a strong correlation with subsequent cognitive decline in this study, suggesting its potential as a more sensitive marker of overall health changes within the body.

Future research will delve into the underlying mechanisms driving this relationship and explore its implications for conditions like dementia and cognitive aging. Lead author Chenlu Gao, a sleep scientist at Brigham and Women’s Hospital, notes the significance of this approach in understanding the complex interplay between heart health and cognitive function.

The findings of this study have been published in the Journal of the American Heart Association, marking a significant advancement in our understanding of how pulse rate complexity could serve as a non-invasive tool for predicting cognitive decline and promoting healthy aging.

TAGGED:CognitivedeclineFutureHiddenpatternpulseScienceAlertsignal
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