Humans move their eyes in coordination with each other in order to stabilize their vision and obtain a three-dimensional effect.However, it is believed that at least 5% of the total population has difficulty aligning their eyes, such as strabismus.

 Until now, it was not clear what kind of brain network works to align both eyes with visual images.Therefore, the research groups of Kyushu University, International University of Health and Welfare, and Fukuoka International University of Health and Welfare have 29 healthy people with normal stereoscopic vision participate in the experiment, and have a brain mechanism to move both eyes separately. Examined.

 In the experiment, images that were slightly shifted horizontally or vertically were presented to the right and left eyes, and while monitoring the movements of both eyes, the cranial nerve activity was examined using a cerebral porcelain meter that measures a very small magnetic field in the brain. ..Interestingly, when I saw a misaligned image with both eyes, my eyes were unintentionally (automatically) moving horizontally or vertically to counteract the misalignment.When we investigated the relationship between this eye movement and activity in various brain regions, we found that about 100 milliseconds after the image was presented (before the eye started to move, the timing to generate the command for eye movement), it was for vision. Extensive brain activity was observed in the brain region, cerebellum, and frontal region, and the eyes were moving about 150 milliseconds later.Immediately before the eye moved, the brain activity pattern was similar regardless of the direction of the image shift, and commonality was observed, but at the timing of the eye movement, the brain activity between the horizontal and vertical eye movements. Was different.That is, at the timing of eye movement, the brain network for horizontally aligning the eyes and the brain network for vertically aligning the eyes may be different.

 The findings revealed in this study are expected to lead to an understanding of the causes of disorders in the coordinated movement of both eyes, and the development of new rehabilitation and devices for strabismus correction.

Paper information:[Scientific Reports] Large-scale cortico-cerebellar computations for horizontal and vertical vergence in humans

Kyushu University

A university that creates "comprehensive knowledge" that opens up the future and drives social change

Kyushu University, which celebrated its 111th anniversary this year, is a core university with 12 faculties and 19 faculties.We have been designated as a "designated national university corporation" that can be an international base by developing the world's highest level of outstanding education and research activities.From the humanities and sociology that we have cultivated so far to the natural sciences, and even the design-related "knowledge" […]

International University of Health and Welfare

To be a medical and welfare expert who can play an active role in Japan and overseas under a fulfilling educational environment

Opened in 1995 as Japan's first comprehensive medical and welfare university. With 5 faculties and 10 departments on 25 campuses, we are training many excellent medical professionals.Our unique curriculum, "Collaboration Education for Related Occupations," is practiced by teams that transcend the boundaries of faculties and departments."Team medical care / team ke […]" which is indispensable in the clinical field of medical welfare

Fukuoka International University of Health and Welfare

Train medical professionals with an international perspective and potential leaders for the next generation

Fukuoka International Medical and Welfare University opened in April 2019 at Seaside Momochi in Fukuoka City.In order to train medical professionals with more practical and advanced knowledge, Fukuoka City's first four-year university for training rehabilitation professionals was established.In April 4, the Faculty of Nursing was newly added to foster a rich humanity […]

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