PSYB64H3 Lecture Notes - Lecture 10: Rhesus Macaque, Facial Nerve, Trigeminal Nerve
Document Summary
Emotions are difficult to study: why, include range of. Changes in body states: the evolution of emotion. Adaptive advantage of emotions for our ancestors: contributing to general arousal (makes you more aware, manage approach and withdrawal behaviors, help us communicate nonverbally. Body language can contribute to help us communicate: body postures produce strong immediate activity in brain areas associated w processing fearful stimuli & flight responses fear postures have benefits for survival tell us when to flee. Facial nerve (cranial nerve vii/7) and trigeminal nerve (cranial nerve v/5) Upper third controlled differently than lower two thirds: top bilaterally, bottom contralaterally. Asking someone to smile subcortical system (spontaneous expression) Both are managed by 2 diff places in the brain. Upper 1/3: receives contralateral & ipsilateral input from the facial nerve. Lower 2/3: receives contralateral input from the facial nerve, different. Voluntary and spontaneous expressions are managed by different areas of the.
