Biopsy 9 Flashcards
Why are we emotional?
Emotions are survival mechanisms.
- emotions encourage us to do things like eat, defend or reproduce
Which part of the brain is involved in generating emotional responses?
Limbic system
How is emotional stimuli transffered into emotional response?
emotional stimuli is sent to the amygdala via sensory system, then to the frontal cortex by direct and indirect signals which creates a perception of emotion
Describe the indirect pathway in interpreting emotions.
Hypothalamus sends messages to the autonomic nervous system —> physical changes in the body(e.g. heart rate increases) —> changes are fed back to the frontal cortex —> interprets emotion
Amygdala are part of which system?
Limbic system
What happen when there is a lesion in medial temporal lobe in the monkey experiment?
- Loss of fear and aggression
- increased sexual activity
- exhibit visual agnosia
What is visual agnosia?
inability to interpret sensation and recognise things
Is awareness of danger innate or learned?
Both involved.
Strength of amygdala in emotion?
Improve survival chances.
- increases awareness of danger —> minimising contact with dangers
Use learning theory to explain how amygdala involved in emotion.
amygdala links the neutral sensory stimuli with other stimuli that is directly associated with the threat
What does the patient (SM) show when there is a bilateral damage?
- impaired in rating emotions related to fears and angers
- draw more positive emotions, e.g. happiness
What is the common-sense view of how we feel emotions?
emotions —> body state changes
What‘s the view of James-Lange theory by William James?
Changes in body state —> emotions
What do the neurons in hypothalamus control?
Body functions: body Temp., heart rate , blood flow, eating & drinking
Why do emotion affect body function?
Neurons in the hypothalamus control body functions receive connections from the amygdala
How would animals react when they have a lesion in their cerebral cortex and an intact hypothalamus?
A.) Very happy to any external stimulus
B.) Very anxiious to any external stimulus
C.) Very aggressive to any external stimulus
D.) Above all
C.) Very aggressive to any external stimulus
Autonomic nervous system (ANS) receives input from \_\_?\_\_ A.) amygadala B.) Cerebral cortex C.) hypothalamus D.) spinal cortex
C.) hypothalamus