Synapses
in sentence
59 examples of Synapses in a sentence
And in this slide you see the neurons and the
synapses
of the brain don't form.
Each neuron is connected via
synapses
to up to 10,000 other neurons in your brain.
So all of those colored lines correspond to bunches of axons, the fibers that join cell bodies to
synapses.
Now that might sound bad, but actually this is a really important developmental process, because gray matter contains cell bodies and connections between cells, the synapses, and this decline in gray matter volume during prefrontal cortex is thought to correspond to synaptic pruning, the elimination of unwanted
synapses.
It's partly dependent on the environment that the animal or the human is in, and the
synapses
that are being used are strengthened, and
synapses
that aren't being used in that particular environment are pruned away.
But non-spiking neurons are actually quite complicated because they can have input
synapses
and output
synapses
all interdigitated, and there's no single action potential that drives all the outputs at the same time.
Rather, they're released in very specific locations and they act on specific
synapses
to change the flow of information in the brain.
It depends, of course, on what scale or what scope you want to think about, but this is an organ of surreal complexity, and we are just beginning to understand how to even study it, whether you're thinking about the 100 billion neurons that are in the cortex or the 100 trillion
synapses
that make up all the connections.
The connections, the interactions, the
synapses.
But two colleagues of mine found that the C4 Post-it note also gets put on
synapses
in the brain and prompts their elimination.
Now, the creation and elimination of
synapses
is a normal part of human development and learning.
Our brains create and eliminate
synapses
all the time.
When you simply open your eyes and look about this room, billions of neurons and trillions of
synapses
are engaged.
But that doesn't explain the billions of neurons and trillions of
synapses
that are engaged in vision.
There's an increased activity of the synapses, the connections between neurons.
The high cost of maintaining resting potentials in all 86 billion neurons means that little energy is left to propel signals down axons and across synapses, the nerve discharges that actually get things done.
Neurons throughout the brain communicate at dedicated sites called
synapses
using specialized neurotransmitters.
As we get older,
synapses
begin to falter and weaken, affecting how easily we can retrieve memories.
And those feed forward into one layer after another layer, after another layer of neurons, all connected by
synapses
of different weights.
The behavior of this network is characterized by the strengths of all of those
synapses.
There are billions or trillions of w's, which represent the weights of all these
synapses
in the neural network.
They're connected by little junctions called
synapses
that exchange chemicals and allow the neurons to talk to each other.
And despite the distant relation, convergent evolution has made it remarkably similar to the human brain, with as many neurons and
synapses
and a highly developed hippocampus and cerebral cortex.
We think they might actually start clearing away the
synapses
themselves.
In slow-wave deep sleep, our glial cells rinse cerebral spinal fluid throughout our brains, clearing away metabolic waste that accumulated in our
synapses
while we were awake.
Remember, the experience of having Alzheimer's is ultimately a result of losing
synapses.
The average brain has over a hundred trillion synapses, which is fantastic; we've got a lot to work with.
We gain and lose
synapses
all the time, through a process called neural plasticity.
Every time we learn something new, we are creating and strengthening new neural connections, new
synapses.
We think it's because these nuns had a high level of cognitive reserve, which is a way of saying that they had more functional
synapses.
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