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12 Cards in this Set
- Front
- Back
S.M- bilateral damage to amygdala
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deficits in identifying facial expressions of fear- inability to automatically use information from eyes, can't draw fear
retains semantic knowledge of fear |
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Dimensional approach to emotion
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emotional states vary on a continuum and are not discrete
characterized by valence and arousal (intensity) |
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Papez Circuit
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network of brain areas thought to be involved with emotion
hypothalamus, anterior thalamus, cingulate gyrus, and hippocampus (amygdala, OFC, and parts of BG= limbic system) vague membership and relationship with emotion now known that neural systems used depend on situation |
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Information to amygdala
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Low road- directly from thalamus to amygdala, quick and dirty
High road- relays through thalamus, then to sensory cortex to amygdala, slower and more accurate |
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Fear conditioning
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implicit learning- form of classical conditioning where US is aversive
Extinction- CS no longer paired with US, CR will go away |
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Amygdala Damage and Fear conditioning
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SP- bilateral damage to amygdala, fails to acquire CR during fear conditioning
amygdala modulates autonomic nervous system Blue square and shock- SP only shows changes in skin conductance to shock aware that blue square predicts it hippocampal damage elicits opposite response |
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Explicit memory for emotional events
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Emotional arousal (+ or -) activates amygdala
Necessary for normal indirect emotional responses to stimuli whose emotional properties are learned explicitly Enhances the strength of declarative memories for emotional events by modulating storage of memories arousal influences memory, blocked by lesions to amygdala forgetting for arousing events is slower- not shown in amygdala patients arousal can influence after initial encoding- strengthen consolidation |
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Facial expressions and the amygdala
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activity increases when viewing faces (greatest for fear), responds to subliminal presentation
also processing sad faces |
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Group evaluation
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Implicit stereotyping- amygdala activation when viewing other race faces
Due to perceptions of similarity, not race |
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OBFC
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activated when identifying angry facial expressions and hearing angry prosody
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Anterior Insula
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linked to identification and experience of disgust- first hand and empathetic disgust activate insula
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Regions
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lots involved in emotion, never get a solitary emotion in one region
Fear is most evolutionarily necessary- most specific region (amygdala) |