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Are mixed emotions real? New research says yes

by Medical Xpress
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Credit: Pixabay/CC0 Public Domain

In Pixar’s latest film, “Inside Out 2,” complex feelings like envy and embarrassment join the cast of characters. Nostalgia, however, is hurried out the door to cries of “too early,” when she appears.

If animators wish to give nostalgia more consideration in a future film, new data from researchers at the USC Dornsife College of Letters, Arts and Sciences could guide them in determining how to animate this sort of “mixed emotion.”

In a recent study appearing in Cerebral Cortex, neuroscientists found that brains display distinct neural activity when experiencing emotions such as bittersweetness.

The advance could help solve a longstanding scientific debate: whether “mixed emotions” arise from unique activity in the brain, or if we’re just flip-flopping back and forth between positive and .

Mixed emotions are a common experience, but they’ve been understudied scientifically for several reasons. Emotions are often thought to exist only on a spectrum from negative to positive, and it’s easier to study one feeling at a time.

“It’s hard to evoke these complex emotions in a realistic way inside the lab,” says Jonas Kaplan, associate professor (research) of psychology and co-author of the study.






Among the key findings, the results showed that mixed feelings elicited unique neural activity in the amygdala and nucleus accumbens areas of the brain. This activity was different than the seen when a subject reported a purely positive or negative emotion.

The researchers could also predict when someone was going to shift emotions. Particular regions of the brain, like the , displayed significant changes as subjects reported an emotional transition.

“Not only did we find brain activity that was correlated with mixed emotions, but we found that it held steady over time,” says Anthony Vaccaro, lead author of the study and a postdoctoral researcher at the Neuroendocrinology of Social Ties Lab at USC Dornsife, who recently completed his Ph.D. in psychology at USC Dornsife. “You’re not ping-ponging between negative and positive. It’s a very unique, mixed emotion over a long period.”

As study subjects watched a poignant animated short film, researchers monitored their brain activity using a magnetic resonance imaging (MRI) machine. The researchers chose “One Small Step” by TAIKO Studios for its ability to evoke simultaneous happy and sad feelings. After the first viewing, participants rewatched the video without MRI and indicated when they experienced positive, negative or mixed emotions. The researchers then compared these reports with the MRI imaging results.

The study lays out practical groundwork for future scientific research into this understudied phenomenon, research that Kaplan says would also be beneficial for understanding human psychology.

“There’s a certain sophistication that’s required to sit with a mixed emotion and to allow yourself to feel positive and negative at the same time. Looking into that more, exploring the benefits of being able to accept positive and negativity at the same time within yourself, is something we think is worth study,” he says.

Kaplan and Vaccaro will next look at how fluctuate in group settings, such as watching a movie together in a cinema.

More information:
Anthony G Vaccaro et al, Neural patterns associated with mixed valence feelings differ in consistency and predictability throughout the brain, Cerebral Cortex (2024). DOI: 10.1093/cercor/bhae122

Citation:
Are mixed emotions real? New research says yes (2024, June 13)
retrieved 13 June 2024
from https://medicalxpress.com/news/2024-06-emotions-real.html

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