PSYB64H3 Chapter Notes - Chapter 14: Cranial Nerve Nucleus, Ventromedial Prefrontal Cortex, Facial Nerve
Document Summary
Week 9 july 20 th , 2015. Emotion: a combination of physical sensations and the conscious experience of a feeling. Valence: a positive (attractive) or negative (aversive) reaction to an object or an event: emotions typically demonstrate valence. The evolution of emotion: adaptive advantage of emotions for our ancestors. Nonverbal communication: the use of facial expressions, gestures, and body language to communicate ideas and feelings. 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. Movement of the face is controlled by two cranial nerves: facial nerve (vii): controls the superficial muscles attached to the skin, which are primarily responsible for facial expressions. Have five major branches with each branch serving a different portion of the face. Upper third receives contralateral and ipsilateral input from the facial nerve.
