Personality Psych Exam 2 pt.3

MRI

What the brain looks like (a picture)

(Omnibus measures)

• Total brain volume

• Cortical thickness

• Total surface area

HIGH SPATIAL RESOLUTION

• Omnibus variables: What does “omnibus” mean and what are some examples?

Overall/general

• Cortical thickness

• Total Brain volume

• Total surface area

fMRI

Changes in blood oxygen levels

• Estimates neural activity → when certain parts of the brain consume glucose

• During a task

HIGH SPATIAL Resolution (Where)

LOW TEMPORAL Resolution (When)

EEG

• Measures brain-wave activity

• High TEMPORAL resolution (When it’s happening)

• Low SPATIAL resolution (Where it’s happening)

• Very FAST

Can be recorded DURING TASK or at rest

ERP: Event-Related-Potential

• Measures brain activity during a specific motor/sensory/cognitive event

What’s an ERP and what is it related to?

Event-Related-Potential:

• Neural activity during a motor/sensory/cognitive event

occurs when using EEG

What is an RPE and which method is it related to?

Reward Prediction Error

• Experience and event that is worse/better than expected

Positive vs Negative RPE

Positive (Rewards Prediction Error)

• Everything went better than expected 

• Higher outcome 

• Lower expectation

Negative (Reward Prediction Error)

• Everything went worse than expected 

• Higher expectation

• Lowe outcome 

Describe ReWP (Reward Positivity)