A Technical Innovation of Prismatic Adaptation Test in Healthy Subject, in Favour of Autonomy and Independence in Daily Life Following a Brain Injury

When someone has a brain injury, sometimes it can affect how they see and respond to the world around them. One specific problem is called 'unilateral neglect'. This means they might struggle to notice things on one side of their body or the space around them – for example, they might only eat half the food on their plate or bump into things on one side. This can make everyday tasks very difficult and frustrating, making it harder for them to live independently.

There's a therapy where people wear special glasses with prisms. These glasses shift what you see, and by practising pointing at targets, your brain gradually adjusts. This helps to improve the neglect. While this therapy is promising, it often requires people to visit a hospital or clinic, which can be difficult to do regularly or for a long time. Because of this, it's hard to know how long the benefits of the therapy last or what the best way to use it is.

This study wants to find new ways to make this helpful therapy more accessible. We are testing these new methods in healthy volunteers first to understand how they work. We're looking at two main ideas: using virtual reality to create the same visual effects as the special glasses, and also trying a method where people imagine making movements without actually moving. The aim is to see if these new approaches can achieve the same helpful brain adjustments as the traditional therapy. If they do, it could open the door for people with unilateral neglect to do their therapy at home, making it much easier to continue treatment and improve their daily lives and independence.