Scientists have identified the main sign of future dementia in everyday language

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Scientists have identified a daily index that would detect dementia long before the first symptoms.

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Canadian researchers have highlighted a unexpected model : the speech speed of a person makes it possible to predict the development of dementia with more precision than traditional memory tests. Meanwhile, This discovery calls into question the current approaches to the early diagnosis of Alzheimer’s disease.

An experience with surprising results – Scientists have identified main sign

Scientists from the University of Toronto recruited 125 healthy scientists have identified main sign volunteers, aged 18 to 90. Consequently, The participants had to describe images, then recognize objects while listening to audio signals. The results questioned the received ideas on the cognitive decline.

It appeared that natural speech speed made it possible to predict the performance of cognitive tasks more effectively than. memorization capacity. People who were talking about faster obtained better results, even in the most complex memory tests.

According to psychologist KT Huey, the elderly perform cognitive tasks much more slowly than the youngest. They more often mark pauses and use parasitic words as “Uh” or « hum ». With age, the natural speed of speech tends to decrease.

Artificial intelligence at the service of dementia diagnosis

The most recent artificial intelligence algorithms are already able to predict a diagnosis of Alzheimer’s with a precision of 78.5 %based only on speech analysis. These technologies examine in particular the length of the breaks between the words and the overall rhythm of the discourse.

A study conducted in 2024 by Stanford University highlighted a link between slow speech flow. the accumulation of tau protein scientists have identified main sign in the brain. These constitute markers characteristic of Alzheimer’s disease. Patients with more amyloid plates in the brain are 1.2 times more likely to meet speech problems.

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According to the World Health Organization, dementia affects more 55 million people in the world. Approximately 10 million new cases are listed each year.

This study also opens up new perspectives for early screening for scientists have identified main sign cognitive disorders. Speech analysis could become a screening tool simple et accessiblewell before the appearance of the clinical symptoms of dementia.