emotion very complex, term has no single, universally accepted definition affect - synonym for...
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Emotion very complex, term has no single,
universally accepted definition
Affect - synonym for emotion
The Emotions
Feeling – in psychology usually refers to conscious subjective
experience of emotion
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The limbic system is often thought of as the primitive part of the brain as it is present in
lower mammals and parts are even found in reptiles. Animals need emotions to survive -
they need fear as a trigger to escape predators and aggression to defend their territory, young and food. Charles Darwin
thought emotions were merely left over from our animal past. However, you rely on your
emotions to make quick, often complex, decisions.
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amygdala
•center for identification of danger•fundamental for self preservation
hippocampus •long term memory center•we compare conditions of present threat with similar past experiences
•routes messages•governs changes in emotional reactivity
thalamus
hypothalamus
•pleasure and rage•aversion•displeasure •uncontrollable loud laughing
cingulate gyrus •coordinates smells and sights
with pleasant memories of previous emotions
•emotional reaction to pain •regulation of aggression
brainstem •emotional
physical reactions
prefrontal area
•sense of social responsibility•capacity for concentration•abstract thought•reason & decision making
fornix
•connects pathways of limbic system
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Arousal-performance phenomenon =Yerkes-Dodson law.a certain amount of anxiety can enhance performance
too much can impair it (ie; severe stage fright).
Yerkes-Dodson law1908
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emotions do not immediately follow perception of event but rather occur after body has responded to event.
James-Lange Theory 1885
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Cannon-Bard theory (also called emergency theory)
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Comparison of James-Lange and Cannon-Bard theories
(red arrows) (blue arrows)
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1937, Neuroanatomist James Papez demonstrated emotion is not function of specific brain center but of circuit that involves four structures:-hypothalamus-anterior thalamic nucleus-cingulate gyrus -hippocampus.
This circuit (Papez circuit), acting in harmony, is responsible for emotions (affect), as well as for peripheral expressions (face,body,voice,etc)
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Papez believed emotion was determined by cingulate cortex Emotional expression was governed by hypothalamus. Cingulate gyrus projects to hippocampus, hippocampus projects to hypothalamus by way
of bundle of axons called fornix. Hypothalamic impulses reach cortex via relay in anterior thalamic nuclei.
amygdala, center for identification of danger, fundamental for self preservation.
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Schachter-Singer Theory
experiencing an emotion requires both emotional arousal and cognitive activity
Two-Factor Theory of Emotions1962
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R. Plutchik’s (1980) Classification of Emotions.
Eight primary emotions - joy, acceptance, surprise, fear, sorrow, disgust, expectancy and anger; other emotions are mixture
Joy Accepted Aware Anger
Sad Rejected Surprise Fear
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“These states – called core affect – influence reflexes, perception, cognition, and behavior and are influenced by many causes
internal and external”
(James A. Russell)
Affective states (emotions and moods)
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Paul Ekman's finding is now widely accepted. Expressions he found to be universal included anger, disgust, fear, joy, sadness, and surprise
Developed Facial Action Coding System (FACS) to taxonomize every conceivable human facial expression.
2004
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Richard Lazarus Theory
Lazarus Theory states thought must come before emotion or physiological arousal. Must think about your situation before you can experience emotion.
EXAMPLE: You are walking down a dark alley late at night. You hear footsteps behind you and you think it may be a mugger so you begin to
tremble, your heart beats faster, and your breathing deepens and at the same time experience fear.
1994
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Cognitive AppraisalLazarus’s research has shown that people’s experience of emotion depends on way they
appraise or evaluate events around them Example:
Person walking with Crocodile Dundee sees a crocodile lunge, & screams.Crocodile Dundee laughs & jumps in to grab the croc!
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