Question

.Explain the Cannon-Bard theory of emotion. Note the brain regions proposed to be involved in the experience of emotion according to this theory and the role that they play. Give two pieces of evidence that support this theory. What aspects of emotion that this theory does not explain??

Answer 1

According to the Cannon-Bard Theory of emotion, emotions and bodily changes do not share a cause-and-effect relationship. Rather, they occur simultaneously, following a stimulating event. The theory holds that emotional expression results from the function of hypothalamic structures, and emotional feeling results from stimulations of the dorsal thalamus. Cannon summarised the observations that serve as the basis for his theory. First, after the removal of the cerebrum anterior to the thalamus, the animal subjects continue to display rage-like emotions. These reactions cease when the thalamus is then removed. Secondly, a tumor on one side of the thalamus can result in unilateral laughter or grimace under the appropriate conditions, although cortical and voluntary control of the same muscles is bilateral. A disadvantage of this theory is, however, that is fails to take into account the vital role cognitive and environmental factors play in emotion.