Psychobiology of memory and emotion; Consummatory behaviours (L10)

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What are stereotyped behaviours as opposed to flexible behaviours?
Stereotyped behaviours are specific responses that do not vary and are reflexive, flexible behaviours depend on conditioned and are malleable
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A rat presses the lever to deliver food the same way every time. This is an example of what type of behaviour?
A consummatory behaviour
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A consummatory behaviour is what?
Stereotypic and aimed at achieving a goal and fulfilling needs - to satisfy a specific drive
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Searching for food by a hungry hawk is what?
An appetitive/ predatory behaviour
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A appetitive/predatory behaviour is what?
An activity that increases the likelihood of satisfying a specific need, to gain access to resources
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What neural basis do predatory behaviours have?
Amygdala
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What neural basis do consummatory behaviours have?
Hypothalamus
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What do lesions to the amygdala and hypothalamus show about mating behaviours in rats?
Hypothalamic lesions lead to pressing lever for the light without mating when the female drops down, and with amygdala lesions males will no longer press the lever but will mate with her
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Why does the rat press the lever?
For the light, the light is rewarding as it is associated with a primary reward
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Which part of the brain does Pavlovian conditioning need, and how do we know?
Amygdala, amygdala lesions mean rat will no longer press the lever
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What is reward?
Liking (sensory pleasure), wanting (motivational incentive value) = reward (liking and wanted are needed together for full reward
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Which parts of the brain are responsible for liking?
Brainstem control (anencephalics and decerebrates show facial affective responses) and hierarchal control (forebrain mechanisms can overrule the brainstem to control affective epressions to tastes)
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What are the neurological bases for wanting?
Mesolimbic subconscious motivational concept
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How do mice studies show wanting involves dopamine?
Mice bred with extra dopamine show greater wanting (will run faster to get a sweet reward), but show no more liking
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What studies show how learning reduces motivation?
Learning can be aversive as well (avoid harmful food because of nausea), learning can predict the feeling of fullness (conditioned satiety; after eating on a full stomach followed by bloating), affects our choice of food
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What type of mechanisms can account for motivation in terms of balancing physiological needs?
Anticipatory mechanisms
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Other cards in this set

Card 2

Front

A rat presses the lever to deliver food the same way every time. This is an example of what type of behaviour?

Back

A consummatory behaviour

Card 3

Front

A consummatory behaviour is what?

Back

Preview of the front of card 3

Card 4

Front

Searching for food by a hungry hawk is what?

Back

Preview of the front of card 4

Card 5

Front

A appetitive/predatory behaviour is what?

Back

Preview of the front of card 5
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