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14. Limbic System

Stanford · 2M views · 2011-02-01 · 1:28:44

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Overview

Robert Sapolsky's Stanford lecture on the limbic system as the emotional part of the nervous system, covering its role in decision making, links to the cortex and the functions of its subparts.

On Hacker News

HN cites it as a real academic source to back up or correct claims about emotion, anger and anxiety in the brain.

Recommended by 1 HN people across 1 months · HN mentions 2019–2021

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What people said

mattdeboard · 2019-02 · Recommendation

The "active amygdala = no empathy" point does not jibe with my lay understanding of the physical phenomenon of empathy. That's the only one that I don't believe models our physiology in a useful way. The rest match up with some of the stuff I've read/watched. Watch some videos by Robert Sapolsky on YouTube. He's a neurostuff prof at Stanford. Good presentations. There's "Why Zebras Don't Get Ulcers" [LINK] Also an actual academic lecture on the Limbic System which contextualizes & clarifies some of the other assertions in the OP blog post. [VIDEO] There are more but hopefully YouTube's algorithm helps you out there. The Stanford lecture series is very interesting though Sapolsky doesn't deliver all the lectures. edit: The only plausible, good faith explanation of the amygdala-empathy claim I can think of is that there are facial recognition studies designed to activate the amygdala [LINK] that showed some correlation between anxiety levels and ACC-amygdala connectivity. The ACC, or anterior cingulate cortex, is held to be responsible for empathy. So it may be an interpretation of that knowledge the author is talking about. I know that facial recognition tests are used for evaluation of empathy, sexual attraction and so on. This is probably the kernel of accuracy in the claim. Or there may be other science on the topic that reaches a conclusion closer to what the author said. The linked study is extremely interesting read.

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h0l0cube · 2021-04 · Reference

The argument makes more sense when you realise that Valium/Diazepam is basically a muscle relaxant. Edit: Source here, happy to hear from another domain expert refuting this [VIDEO]

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h0l0cube · 2021-04 · Reference

Maybe it's not strictly true, but got this from Robert Sapolsky (Stanford neurobiology professor): [VIDEO] His opinion, or the best understandings on this, might have changed though. From the YT transcript: > Here's somebody taking Valium for anxiety, and here's somebody taking Valium to relax their muscles. What's up with that? It's the exact same thing. And it is a very James-Lange moment. What's part of anxiety about? It's monitoring the level of tension in your body. It's getting feedback from muscle tone. He seems to be suggesting that the mode of action for Valium to reduce anxiety is that of reducing muscle tone. Not an expert, so I can't argue about it.

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Sources

Video by Stanford, played through YouTube.

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