What is the significance of the limbic system

They're ignoring certain social conventions because of the effect of alcohol. So that's how I remember the effect of stimulating versus destroying the amygdala. And this green structure here that you curving around the thalamus is known as the hippocampus. And the hippocampus plays a key role in forming new memories. What it does is it helps to convert your short-term memory-- I'll abbreviate it as "STM"-- it helps convert that short-term memory into your long-term memory.

And I mention that in this conversation because when you think back on your memories, whether it's short-term memory or long-term memory, these memories can evoke emotions as well. So the hippocampus is an important structure in forming long-term memories. And people with damage to this area, they have difficulty forming new memories. So everything that they experience just basically fades away. Now what's interesting about this is if your hippocampus is destroyed, while you can't form new memories, you still have your old memories intact.

So your long-term memory functions just fine. So that's the hippocampus. Now lastly, this orange structure here, this orange structure is the hypothalamus. And "hypo" means below. So hypothalamus is below the thalamus. And here's the thalamus. And it's below it. So that's where it gets its name from. And the hypothalamus is actually a very tiny structure.

And this diagram here really exaggerates the size of the hypothalamus. It's about the size of kidney bean. And the hypothalamus plays an incredible role in regulating so many functions in your body. But for our purposes, we're talking about the limbic system structures in terms of emotion. So when it comes to emotion, the hypothalamus you can think of as regulating the autonomic nervous system. I'll abbreviate it as "ANS. Now, I'm going to discuss this further in a different video.

But right now, just think of it as regulating the autonomic nervous system. And it does this by controlling the endocrine system, by triggering the release of hormones into your bloodstream. And some of these hormones that are triggered to release are things like epinephrine or norepinephrine. And epinephrine is actually very commonly known as adrenaline. Cooke, B. Steroid-dependent plasticity in the medial amygdala.

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Nery, S. The caudal ganglionic eminence is a source of distinct cortical and subcortical cell populations. Download the pdf. Download printable poster. Skip to menu Skip to content Skip to footer. Site search Search. Site search Search Menu. The limbic system. Home The Brain Brain anatomy. Hippocampus The hippocampus, like many other structures in the brain, comes as a pair, one in each hemisphere of the brain. Neuroimage, 30 2 , Lepage, C. Limbic system structure volumes and associated neurocognitive functioning in former NFL players.

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