Most sensory information reaches the cortex after first being processed by the:: (A) Basal ganglia, (B) Brain stem, (C) Thalamus, (D) Cerebellum
Answer is C. (C) Thalamus > There is a major input from the anterolateral systems into the mesencephalic reticular formation. Thus, sensory input activates the reticular activating system, which in turn maintains the cortex in the alert state.