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Lecture 25

PSYC 102 Lecture Notes - Lecture 25: Subliminal Stimuli, Amygdala, Autonomic Nervous System


Department
Psychology
Course Code
PSYC 102
Professor
Delroy Paulhus
Lecture
25

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Emotion Feb 25
Aspects:
1. physiological activation
2. expressive behaviours
3. conscious experience
Functions:
1. enhance survival
2. focus attention, energize action
3. strong want/need to avoid/obtain
Theories
common-sense view:
1. thought (cognition)
2. emotion
3. physiological response
James-Lange Theory:
physiological activity precedes (and dictates) emotional experience
- perceive stimulus physiological response emotion
Cannon-Bard Theory:
physiological and emotional response separate but occur at same time
- perceive stimulus physiological response + emotion
Two-Factor Theory:
physical arousal + cognitive label = emotion
- perceive stimulus physiological response + label emotion
- supported by misattribution theory, Capilano Bridge study
Zajonc/Ladoux:
emotion can happen without conscious cognitive appraisal
- neural shortcut bypasses cortex (thinking) to create fear
Embodied Emotion
-e.g. butterflies in stomach, racing heart, neurons activated in brain (not feel directly)
autonomic nervous system:
mobilizes us for action
- e.g. respiration increases oxygen, blood pumped to muscles
(arousing)
parasympathetic
(calming)
pupils dilate
eyes
pupils contract
decreases
salivation
increases
perspires
skin
dries
increases
respiration
decreases
accelerates
heart
slows
inhibits
digestion
activates
stress hormones
adrenal glands
lower stress hormones
- low arousal best for difficult tasks, high for easy tasks
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