Emotion centers in the brain?

12 important questions on Emotion centers in the brain?

What is the locationist approach in basic emotion theories?

Emotion categories.
- Specifically & consistently localised to discrete brain area's or networks

What is the fear center according to locationist hypotheses?

Amygdala

What is the sadness center according to locationist theories?

Anterior cingulate cortex
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What is our conclusion about locationist approaches if we analyse brain activity?

Shit.
Every area named as a center (amygdala, insula, iOFC, pACC) are active in other emotions aswell

What are the 4 labels for basic emotions in constructionist theories?

Core affect: Mental representation of body sensations (with pleasure or displeasure & arousal)

Conceptualisation: Interpretation of body sensations in context

Emotion words: Linguistic labels that help cohere together: feelings, behaviours, facial expressions in a meaningful emotion categories

Executive attention: top-down control of bodily sensations, conceptualisation & emotion words

What are emotions according to constructionist theories?

Labels referring to combinations of more basic processes

What are new findings from MVPA in neuroimaging?

- Brain activity overall may be similar for different conditions --> Spacial patterns may differ

- Classification of patterns can lead to better decoding: similarity, discriminability

What is the difference between MVPA  & standards univariate measuring in prosody?

Univariate: no distinction in emotional audio (prosody)

MVPA: distinct emotion-specific patterns (prosody)

The mPFC is thought to have a general role in emotion processing. What did MVPA reveal about this area? And what conclusion can be made from this?

Emotion specificity in the distributed patterns in mPFC.

Conclusion: No specific emotion centers, but distinct emotion-specific distributed patterns.

What area's are most informative for emotions in MVPA? (Which area's can the machine recognise emotions easily?)

Emotion network, not one region: Anterior PFC & OFC, medial PFC parietal, subcortical
(Methode actor study & imagery vs perception study)

What did MVPA of emotion experience using method actors to show emotions to someone in a scanner show?

MVPA was
- 84% correct when training & testing within the same subject
- 70% correct when training & testing on independent subjects

What did studies on imagery vs perception show in MVPA?

Emotion networks not regions.
- Widely distributed patterns of activity distinguish emotions in a lot of different brain areas
- Different co-activations, but same areas.

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