PSYB64H3 Chapter Notes - Chapter 14: Trigeminal Nerve, Facial Nerve, Rhesus Macaque
9 Dec 2011
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Emotion an emotion has two major components: a physical sensation, such as a rapid heartbeat, and a conscious, subjective experience or feeling, such as feeling scared. Emotions typically demonstrate valence: a positive (attractive) or negative (aversive) reaction to an object or event: so emotions possess a positive or negative quality. The evolution of emotion: charles darwin concluded that emotional expression must have evolved. Expression and recognition of emotion: human adults are typically good at expressing and interpreting emotions accurately. The facial nerve has five major branches, with each branch serving a different portion of the face. The facial nerves originate in the two facial nuclei located on either side of the midline in the pons: these nuclei do not communicate directly with each other. Two major pathways control facial expression: one involves input from the motor cortex and is primarily responsible for voluntary expression.
