PSYC 2160 Lecture Notes - Lecture 10: Premotor Cortex, Prefrontal Cortex, Limbic System
CH17 Emotions, Stress, Anxiety & Depression
Emotions
The interfere between the mind & the body
A coupling of physical sensation, bodily changes & mental representations
Relations of Perceptions of Emotion-Inducing stimuli, the autonomic & somatic responses to the
stimuli, and the emotional experiences
James-Lange
oPhysiological basis of emotion
oEmotion inducing stimuli trigger charges
oResults in experience of emotion
- Cannon Bard
- emotional stimuli evoke independent visceral & emotional responses
- Third Theory
- interaction between perception of emotional stimulus, autonomic/somatic responses,
and experience of emotion
Early Landmarks
Sham Rage (1929): decorticate cats and aggression
Limbic system (F 17.4): Papez, controls expression of emotions
Kluver-Bucy syndrome (1939): damage to amygdala; fearless,
hypersexual, and explores objects with mouth
Emotions & Facial Expression
F 17.5 Ekman’s 6: anger, disgust, fear, happiness, sadness, surprise
Effects of facial expression on experiences of emotions
oHappiness inducing slides: increased happiness, decreased anger
oAnger inducing slides: decreased happiness, increased anger
Facial Feedback Hypothesis
Bodily positions influence our emotions
“ a pencil in the mouth”
F 17.10 Horizontal, Sagittal & coronal functional MRIs show areas of increased activity in
the primary motor cortex (MI) and the premotor cortex (MPC) when volunteers watched
facial expression of emotion. Same areas were active when the volunteers made the
expressions of themselves
Laughing Rats
Functions of Emotions also include:
Adaptive values (fear leads to escape, anger leads to attack, etc)
oAllow us to make quick decisions
oHelp us make moral decision
The consequences of our decisions have emotional considerations
Emotions are an important component to moral decisions
Failure to anticipate the unpleasantness of an event can lead to bad decision making
Contemplating moral decision activates the prefrontal cortex, cingulate gyrus &
amygdala
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Document Summary
The interfere between the mind & the body. A coupling of physical sensation, bodily changes & mental representations. Relations of perceptions of emotion-inducing stimuli, the autonomic & somatic responses to the stimuli, and the emotional experiences. James-lange: physiological basis of emotion, emotion inducing stimuli trigger charges, results in experience of emotion. Emotional stimuli evoke independent visceral & emotional responses. Interaction between perception of emotional stimulus, autonomic/somatic responses, and experience of emotion. Limbic system (f 17. 4): papez, controls expression of emotions. Kluver-bucy syndrome (1939): damage to amygdala; fearless, hypersexual, and explores objects with mouth. F 17. 5 ekman"s 6: anger, disgust, fear, happiness, sadness, surprise. Effects of facial expression on experiences of emotions: happiness inducing slides: increased happiness, decreased anger, anger inducing slides: decreased happiness, increased anger. F 17. 10 horizontal, sagittal & coronal functional mris show areas of increased activity in the primary motor cortex (mi) and the premotor cortex (mpc) when volunteers watched facial expression of emotion.
