Neurons ... communication.

Activation of these neurons increases dopamine and norepinephrine in these areas, and excites histaminergic tuberomammillary neurons increasing histamine levels there.

And we did that for tens of thousands of neurons, built digital models of all the different types of neurons we came across.

He generated neurons from these induced pluripotent stem cells from patients who have Lou Gehrig's Disease, and he differentiated them into neurons, and what's amazing is that these neurons also show symptoms of the disease.

The unique character of both individual neurons and neurons within a collection of the brain are driven by fundamental properties of their underlying biochemistry.

Moreover, once we can do that, we can actually activate specific neurons or we can destroy or inhibit the activity of those neurons.

Afferent neurons communicate with specialized interneurons.

These cells are modified postganglionic neurons.

A very dense network of processes occupies the space between the cell bodies of the neurons, neuroglia (cells that support and protect neurons), and blood vessels.

Ed Boyden A light switch for neurons

VS Ramachandran The neurons that shaped civilization

When your neurons are replaced, they change.

He took 20,000 and then 60,000 disaggregated rat neurons so these are just individual neurons from rats put them on a chip.

And you may have more or less neurons.

We can use different neurons with different variations.

But these neurons are also part of an adaptive, regenerative system.

If we model smell on local terms, we can trace how nasal neurons interact with scent particles, sending signals through a network of other neurons to the brain.

With binary neurons (activations either 0 or 1), connections would be set to 1 if the connected neurons have the same activation for a pattern.

So, the fabric of the brain, even though your brain may be smaller, bigger, it may have different types of neurons, different morphologies of neurons, we actually do share the same fabric.

So we can describe the communication between the neurons.

Here the lower motor neurons (LMN) of the corticospinal cord are located.

On the other hand, if we activate a group of neurons and we find that that produces the behavior, we can conclude that those neurons are sufficient for the behavior.

And if we record from lots of different neurons, we'll see that different neurons fire when the animal goes in different parts of its environment, like in this square box shown here.

So, we have the mathematics to make neurons come alive.

Neuroscientist Vilayanur Ramachandran outlines the fascinating functions of mirror neurons. Only recently discovered, these neurons allow us to learn complex social behaviors, some of which formed the foundations of human civilization as we know it.

There are these newly identified neurons, mirror neurons, that act like a neuro Wi Fi, activating in our brain exactly the areas activated in theirs. We feel with automatically.

The frontal lobe contains most of the dopamine sensitive neurons in the cerebral cortex.

We can look at the fabric. And we can change neurons.

For instance, it is assumed that neurohacking requires detection of the state of individual neurons (approximately 1 micrometer diameter) while the resolution of the MEG is several thousand neurons and other imaging systems may be even larger.

Because, if the first neurons in the chain are activated, through their synapses they send messages to the second neurons, which are activated, and so on down the line, like a chain of falling dominoes.

A nervous system emerges from the assemblage of neurons that are connected to each other.

One prototype is constructed from leech neurons, and is capable of performing simple arithmetic operations.

In neuroscience, it includes measurements of the electrical activity of neurons, and particularly action potential activity.

Now to bring home the point of how close it is the relationship between the grid of neurons and the topographical arrangement of the activity of the neurons and our mental experience I'm going to tell you a personal story.

Our brain is made up of billions of active neurons, around 170,000 km of combined axon length.

Rapidly growing populations are also young populations, because of the high number of children per household.

And in this slide you see the neurons and the synapses of the brain don't form.

Sensory neurons die a programmed death you literally have a new sense of smell every month.

Now, one recent discovery that has been made by researchers in Italy, in Parma, by Giacomo Rizzolatti and his colleagues, is a group of neurons called mirror neurons, which are on the front of the brain in the frontal lobes.

Repeated stress causes neurons in the hippocampus and the prefrontal cortex to shrink and lose connections with other nerve cells, while it also causes neurons in the amygdala to grow and form new connections.

So, most of them will fire when I'm touched in different locations. Different neurons for different locations.

And in the 1970s and '80s, a team of scientists mapped all 7,000 connections between the neurons.

This activity of the drug on brain neurons is thought to be responsible for its antidepressant effects.

Together, Ecuador and Peru could protect their populations, particularly their indigenous populations, from the scourge of mines.

It paralyzes you. It starts by killing the motor neurons in your spinal cord.