Yes, it is possible for a blind person's brain to create visuals from sound through a process known as echolocation. Echolocation is a mechanism used by some animals, such as bats and dolphins, to navigate and perceive their environment by emitting sounds and interpreting the echoes that bounce back.
In the case of humans, individuals who are blind or have low vision can develop the ability to use echolocation as a substitute for vision. They produce sounds, such as clicks or tongue snaps, and listen to the echoes that bounce back from surrounding objects. By interpreting the characteristics of the echoes, such as their intensity, direction, and timing, they can form mental images of their surroundings.
With practice and training, blind individuals can refine their ability to use echolocation and gain a sense of the spatial layout of their environment. They can perceive objects, estimate distances, and even navigate through spaces using this auditory information.
It's important to note that not all blind individuals develop or rely on echolocation, and the ability to use it effectively varies among individuals. Additionally, echolocation does not provide the same level of detail and richness as vision, but it can still be a valuable and adaptive skill for navigation and perception.