Feelings of love are associated with specific patterns of brain activation. Experiments by Andreas Bartels and Semir Zeki (2000) found that experiencing love increases activity in the insula, anterior cingulate cortex, caudate, and putamen, while reducing activity in the posterior cingulate, amygdala, and right prefrontal cortex.

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Studies investigating different brain regions associated with emotion concluded that there is no singular brain region associated with a specific emotion. Rather, each emotion has different patterns of activation across several different brain regions.

Brain Regions Associated with Emotions

- A biological neural network, in theory, is an assemblage of structures that are able to regulate central nervous system automatisms with efficiency and pin-point accuracy.
- The concept of neural networks was originally coined in order to understand the construction of a neural circuit; it has since evolved to explaining circuitry functionality and interconnectedness with other networks and structures.
- The triple-network model of psychopathology, moreover, is representative of this idea, wherein the salience network (SN) serves as an interface between the frontoparietal network (FPN) and default mode network (DMN), allowing the integration and balance of neural processing with affective processes.

Biological Neural Network

The Love Pathway

-PET images of adult subjects asked to reexperience episodes of happiness showed increased activity in the right posterior cingulate cortex and left insula,  as well as decreased activity in the left anterior cingulate cortex.

The Happiness Pathway

-PET images of adult subjects asked to reexperience episodes of anger showed increased activity in the left anterior cingulate cortex and pons.



Neural Pathway for Anger

-PET images of adult subjects asked to reexperience episodes of sadness showed increased activity in the anterior cingulate cortex, insula, and dorsal pons, as well as decreased activity in the posterior cingulate cortex.

The Sadness Pathway

Not only does the dorsolateral prefrontal cortex activate when one experiences disgust but so does the amygdala, ventromedial PFC, orbitofrontal cortex, insular cortex and the anterior cingulate.

The pathway for social and moral disgust is consistent with core disgust or gastrointestinal discomfort. 



The Disgust Pathway

A neuroscientist conducts a study where participants view images designed to evoke fear. Using fMRI scans, the researcher observes significant activation in the amygdala. Based on this finding, the researcher publishes a paper concluding that the amygdala is the brain's 'fear center.' Based on the contemporary understanding of how the brain processes emotions, evaluate the researcher's conclusion. Why is this conclusion likely an oversimplification?

Interpreting Brain Imaging Research

The limbic system is the area of the brain primarily involved in processing emotion and memory.

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