PSYB64H3 Lecture Notes - Lecture 10: Facial Feedback Hypothesis, Trigeminal Nerve, Facial Nerve
Document Summary
Week 10 july 20 th , 2015. Emotions: difficult to study, include a range of: Changes in body states: physiological activity. The evolution of emotion: adaptive advantage of emotions for our ancestors. Body postures produce strong immediate activity in brain areas associated with processing fearful stimuli and flight responses. Fearful postures likely to have significant survival benefits to humans because the need to flee can be communicated rapidly. Controlling facial expression: facial nerve (vii) and trigeminal nerve (v, upper third is controlled contralaterally; lower two thirds are controlled bilaterally. Upper third receives contralateral and ipsilateral input from the facial nerve. Lower two thirds receive contralateral input from the facial nerve: pathways motor cortex (voluntary expression) and subcortical system (spontaneous expression) Biological influences on emotional expression: universality of emotions by ekman. Basic expressions common across cultures: happiness, surprise, disgust, sadness, fear, contempt, anger, and embarrassment. No specific training seems to be required to identify them.
