Phillip Bard contributed to the theory with his work on animals. Bard found that sensory, motor, and physiological information all had to pass through <answer>the diencephalon</answer> (particularly the thalamus), before being subjected to any further processing. Therefore, Cannon also argued that it was not anatomically possible for sensory events to trigger a physiological response prior to triggering conscious awareness and emotional stimuli had to trigger both physiological and experiential aspects of emotion simultaneously.
What is the thalamus a part of?
the diencephalon