Front | Back |
3 Types of Decision Making
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1. Perceptual
2. Social 3. Value-based |
3 Conditions of Value-Based Decision Making
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Neuroeconomics
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Aka "Decision Neuroscience"
How can economics help us understand the brain? How can the brain help us understand economics? |
Risk Aversion
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The tendency to avoid risks, even if the overall expected value is lower
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People tend to choose higher value option but...
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...conceptions of what is higher value differs
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Framing
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The way a decision is framed (i.e. loss vs gain) changes people's preferences towards it
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How do we make difficult decisions?
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1. Balance short term desires and long term goals
2. Compute the value of each option and choose higher |
Mesolimbic Pathway
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VTA -> Striatum, Amygdala, Hippocampus
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Mesocortical Pathway
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VTA -> Cortex (particularly VMPFC)
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How is value represented neuronally?
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DA release from the Ventral Tegmental Area (VTA) and Substantia Nigra (SN ) |
Striatum (part of what, includes what)
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-Part of Basal Ganglia -Made of Caudate, Putamen, NAc |
Dorsal Striatum Function
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Acting (selecting the best response)
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Ventral Striatum Function
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Encodes pure valuation signal (especially NAcc)
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VMPFC Function
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Integrates info from many brain regions
-dopaminergic input from VTA/SN -exec control info from DLPFC Important for encoding value, but more complex |
Rat Brain Stimulation value studies show...
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...that value scales with the amount/rate of stimulation. Increase in Hz -> increase in bar pressing.
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