PATHOLOGY

Detailed explanation-1: -The reticular formation controls the body’s level of consciousness through the reticular activation system, also known as RAS. Sensory axons, found in visual, auditory, and sensory impulses, activate RAS neurons in the brain stem. These neurons then relay information to the thalamus and cerebrum.

Detailed explanation-2: -Thalamus. Located in the central part of the brain, the thalamus receives sensory messages, such as touch, from the body, and sends the messages to the appropriate part of the brain to be interpreted.

Detailed explanation-3: -A significant portion of the incoming fibers to the thalamus come not from sensory systems, but from the cortex itself. There are many connections to the thalamus that are involved in taking information from the cortex, modulating it, and then sending it back to the cortex.