Lesions and Sensory Processing: Identify the Structure

Imagine a scenario where a person suffers a lesion in a specific part of the brain. This lesion disrupts the person’s ability to process sensory information from their body, leading to issues with proprioception and touch discrimination. If this lesion were to occur in the part of the nervous system that primarily processes sensory input from the body and relays that information to other areas of the brain, which structure might be most affected?