Before Occulus got bought by Meta/Facebook I was working on getting them to do pretty much this. We were actually using them for therapy, but I was designing them to do both a form of hypnosis/meditation therapy and to do brain stimulation therapy using visual fields.

At the time I was under the employ of a psychiatrist who had basically been doing this using regular monitors for decades, but we decided to stop working on this once they got bought by Facebook, partially because of the moral implications and partially because they removed several key features like eye tracking that we wanted to implement in our final product.