In all cases, there are millions upon
millions of neurons in the brain, all with complex connections to each other.
Perhaps even more intriguing, our astrocytes are enormous compared with the astrocytes of other animals — 20 times larger than rodent astrocytes — and they make contact
with millions of neurons apiece.
One says that
millions of neurons work in concert, piecing together various bits of information into one coherent picture, whereas the other states that the brain contains a separate neuron to recognize each individual object and person.
Unlike the small, smooth mouse brain, however, the uppermost layers of tissue in the human brain
cram millions of neurons into specialized folds and furrows responsible for complex tasks such as language and thought.
Dynamical neural models help explain how the activity of hundreds or
even millions of neurons represent internal variables — a sound, the position of a limb during a movement, the desire to move in the first place, or something else.
Brainwaves reflect the group - level activity
of millions of neurons and are involved in information transfer between brain regions.
He suggests that consciousness results from «patterns of activity involving thousands or
millions of neurons» (AT 44).
What makes cognition especially challenging as a target of this technology, as opposed to motor behavior, is that memory function is represented by sparse and partially overlapping neural networks consisting of
millions of neurons, Markovic says.
That should help scientists better see how a disease affects neurons throughout the body — like how a stroke can cause neuromuscular weakness — because it's nearly impossible to reconnect
the millions of neurons throughout a rodent body once dissected.
Instead, we combine the activity of thousands to
millions of neurons to ensure a more accurate message, which makes effective communication amongst large populations of neurons a central feature of the brain.
The brain's basic functions — such as planning, decision - making, and behavior — require multiple brain areas and many thousands or
millions of neurons, generating complex patterns of neural activity.
Scientists today can study smaller scales of dozens of neurons with electrodes or very large - scale brain activity with MRI scans, but this crucial middle scale of thousands or
millions of neurons is currently out of reach.
The idea is to develop the tools and technologies needed to study the activity of the brain on the scale of whole networks of thousands or
millions of neurons.
As you can probably imagine,
these millions of neurons sending signals all at once produces an enormous amount of electrical activity in your brain, and this can actually be detected using medical equipment like an electroencephalography (EEG), which measuring electricity levels over areas of your scalp (4).