Read this: Phillip Bard contributed to the theory with his work on animals. Bard found that sensory, motor, and physiological information all had to pass through the diencephalon (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.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): Who argued that an unemotional stimulus triggered experiential and physiological responses to emotions at the same time?
unanswerable