Monday, May 11, 2009

"Higher" emotions have neural correlates too

Check out this post at Deric Bowds Mindblog, Brain correlates of self-transcendent emotions, based on this paper by a group which includes the Damasios: Neural correlates of admiration and compassion.

Bownds writes:
"Antonio and Hanna Damasio and collaborators have now observed brain activities associated with our internal loftier emotions that transcend self-interest, such as elevation and admiration. These are hard to measure because they don't correlate obviously with facial expressions or body language."


Writers at PNAS (again, from Deric's blogpost) provide an overview, put the paper into context:
"Emotion research has something in common with a drunk searching for his car keys under a street lamp. ‘‘Where did you lose them?’’ asks the cop. ‘‘In the alley,’’ says the drunk, ‘‘but the light is so much better over here.’’ For emotion research, the light shines most brightly on the face, whose movements can be coded, compared across cultures, and quantified by electromyography. All of the ‘‘basic’’ emotions described by Paul Ekman and others (happiness, sadness, anger, fear, surprise, and disgust) earned their place on the list by being face-valid. The second source of illumination has long been animal research. Emotions that can be reliably triggered in rats, such as fear and anger, have been well-studied, down to specific pathways through the amygdala. But emotions that cannot be found on the face or in a rat, such as moral elevation and admiration, are largely abandoned back in the alley. We know they are there, but nobody can seem to find a flashlight. It is therefore quite an achievement that Immordino-Yang, McCall, Damasio, and Damasio managed to drag an fMRI scanner back there and have given us a first glimpse of the neurological underpinnings of elevation and admiration."


My bold.
Here is the abstract of the paper itself;

Abstract

In an fMRI experiment, participants were exposed to narratives based on true stories designed to evoke admiration and compassion in 4 distinct categories: admiration for virtue (AV), admiration for skill (AS), compassion for social/psychological pain (CSP), and compassion for physical pain (CPP). The goal was to test hypotheses about recruitment of homeostatic, somatosensory, and consciousness-related neural systems during the processing of pain-related (compassion) and non-pain-related (admiration) social emotions along 2 dimensions: emotions about other peoples' social/psychological conditions (AV, CSP) and emotions about others' physical conditions (AS, CPP). Consistent with theoretical accounts, the experience of all 4 emotions engaged brain regions involved in interoceptive representation and homeostatic regulation, including anterior insula, anterior cingulate, hypothalamus, and mesencephalon. However, the study also revealed a previously undescribed pattern within the posteromedial cortices (the ensemble of precuneus, posterior cingulate cortex, and retrosplenial region), an intriguing territory currently known for its involvement in the default mode of brain operation and in self-related/consciousness processes: emotions pertaining to social/psychological and physical situations engaged different networks aligned, respectively, with interoceptive and exteroceptive neural systems. Finally, within the anterior insula, activity correlated with AV and CSP peaked later and was more sustained than that associated with CPP. Our findings contribute insights on the functions of the posteromedial cortices and on the recruitment of the anterior insula in social emotions concerned with physical versus psychological pain.

I deliberately bolded the bit about the anterior insula, because of how involved it seems to be in pain production or at least pain perception.

2 comments:

Dr.Rutledge said...

Hi,

Very interesting and informative post.

I'm a physician and former faculty member at Harvard and Stanford Medical Schools. I discovered your blog while looking for the best health writers on the web. I reviewed your posts, and think your writing would be a great addition to the Brain Health Community on Wellsphere, a top 5 health website that has nearly 5 million visitors monthly. If you would like to learn more about how you can join our Health Blogger Network, republish your blog posts and be featured on the Wellsphere platform, just drop me an email at dr.rutledge@wellsphere.com.

Cheers,
Geoff

dermoneuromodulator "neuroplastician" said...

Hi Dr. Rutledge,

Thank you for your comments. About your invitation, thank you but I've/we've decided to keep the blog independent.

Diane