What type of relationship do local signs from touch inform the visual system about?

Local signs from touch provide the visual system with crucial information about depth perception. When we touch an object, the specific locations where we feel sensations give us a spatial understanding of that object relative to our position. This tactile feedback enhances our ability to perceive how far away an object is, which is vital for accurately interacting with our environment.

For example, when you reach out to grab an item, the tactile sensations—such as pressure or texture—inform you about how close or far the object is, helping to create a three-dimensional understanding of the space around you. This integration of touch and vision helps to form a more accurate perception of depth, ensuring your movements are coordinated with your visual judgments.

The other options, while related to the sensory experiences, do not directly involve the relationship between touch and the visual system in the same way. Color differentiation, emotional states, and speed of movement pertain to different aspects of sensory processing and do not rely on local signs from touch to inform depth perception.