Eye movements could help locate the cognitive decline

&#13. Consequently,

The eyes would not only reflect the soul. Nevertheless, They would also make it possible to see the health of our cognitive functions. Furthermore, Canadian. Furthermore, West Indian researchers have discovered that by observing the eye movements, it was possible to identify people with cognitive decline or memory disorders.

Their work was published in the journal PNAS August 11, 2025.

&#13. Moreover,

Eye movements betray cognitive difficulties

For many years, we know that eye movements have eye movements could help locate participated in the processes of encoding and recovery of visual information around us. In order to determine if they are also a way to identify people with cognitive disorders. researchers brought together 106 participants in five groups: young adults, elderly in good health, people at risk of significant cognitive decline, patients with light cognitive impairment (MCI) and patients with amnesia. All volunteers participated in two experiences.

During the first, they had to look at a series of 120 distinct images distributed for 5 seconds divided into 3 blocks. This test made it possible to assess the “similarity of the idiosyncratic look”. That is to say the average correlation of eye movements for each image with eye movements for all images. of the same block. A low similarity of the idiosyncratic gaze shows that the person has a unique coding model in each image. On the other hand, a high score eye movements could help locate reflects a more generic model of encoding.

&#13.

Data analysis has shown that the similarity of the idiosyncratic look has increased linearly between the groups classified according to their alleged memory function. Thus, the lowest score was observed in young adults and the highest in amnesiac people. Moreover. Exploratory visualization (that is to say, moving your eyes to look at different elements of an image) were smaller in people with memory disorders.

&#13.

During the second experience, the team used the same set of images, presenting 60 shots once and 60 other three times for 5 seconds to measure the “similarity of the repetitive look”. This approach makes it possible to determine whether the participants systematically identified the same characteristics when they were presented to them several times the same image. if they memorized new elements each time.

Result: the group of young healthy adults co -have different characteristics with each eye movements could help locate presentation. On the other hand. participants with memory problems or a cognitive decline tended to focus on the same elements each time they saw the image.

Another observation: the visualization behavior patterns were specific to each group.

&#13.

Eye movements could help locate

Cognitive disorders: eye movements as a screening tool

The two experiences conducted the researchers to conclude that the decline in memory is associated with a reduced visual exploration as well as a less effective coding and differentiation of images. For them, the study of eye movements could thus help to identify people who suffer from cognitive decline. However, they recognize that additional work is necessary before its use as a screening tool.

&#13.

“The value of ocular monitoring compared to standard neuropsychological tests is that it is non-invasive, profitable and, perhaps the most important, universal”said the main author, Dr eye movements could help locate Jordana S. Wynn at Medscape Medical News. “Almost everyone – whatever their age. capacity or language – can see images on a screen, so create a screening tool that is not based on written or verbal responses would be particularly practical.”