Sentences with phrase «number of neurons»

In addition to the decrease in size, the overall number of neurons in the brain, the cells that comprise the brain and central nervous system, decrease in number.

How could such a small number of neurons produce such a dramatic increase in memory?

However, the real power of the central nervous system lies in the smooth coordination of large numbers of neurons.

As it turns out, bears actually have about the same number of neurons as cats.

The sheer number of neurons present in the human brain becomes more apparent when compared to other species.

Yet the bear's cortex contained roughly the same number of neurons as a cat, some 250 million.

The main difference is in the sheer number of neurons.

For most animals, the team found the expected numbers of neurons, given a certain brain size.

In the most basic sense, the brain manages noise by using large numbers of neurons whenever it can.

There is a gap in our knowledge about brain network function because we lack the tools to study large numbers of neurons spread over large regions of the brain.

This seizure also starts as a small number of neurons, yet in this case it does not spread far beyond these initial neurons.

It means that the brain can save energy by containing large numbers of neurons that it rarely uses.

Despite being about 10 times bigger than a cat's cortex, the bear's cortex contained roughly the same number of neurons, about 250 million.

«Composed of roughly 100 billion neurons... the human brain is so complex that scientists have not yet found a way to record the activity of more than a small number of neurons at once, an in most cases that is done invasively with physical probes.»

The researchers found that the reduced number of neurons in the microcephalic models was linked to a lack of a protein called CDK5RAP2.

«In particular, song birds and parrots have very high numbers of neurons per unit of volume.»

Using a flexible mouse model, her team set out to determine whether anything could be done to restore memory «after a significant number of neurons are lost in the brain.»

They observed that a significantly greater number of neurons died in the presence of the progranulin - deficient microglia when compared to unmodified microglia.

Before it began, each monkey had electrodes implanted into its right and left brain hemisphere, which recorded the activity of up to 500 neurons acting together — the highest number of neurons yet used in such an experiment, Nicolelis says.

Understanding this process enables Canals» lab to grow a huge number of neurons in dishes in the lab - useful both for basic research and also as a source of healthy cells for experimenting with cell transplantation.

Even though the original source of the seizure is usually only a small number of neurons on one side of the cerebral cortex, the discharge of these neurons causes other neurons to discharge also, eventually causing the seizure to be generalized.

Other research, she noted, has found a decreased number of neurons in the hippocampus of people who died with Alzheimer's.

Herculano - Houzel hopes that the results of the study and the questions it raises will stimulate other neuroscientists to begin exploring the mysteries of the avian brain, especially how their behavior compares to that of mammals of similar numbers of neurons or brain size.

The study results were published online in a paper titled «Birds have primate - like numbers of neurons in the forebrain» in the Proceedings of the National Academy of Sciences early edition on the week of June 13.

«We believe it's the largest number of neurons simultaneously recorded in a non-human primate,» says Nicolelis.

The authors also noticed that a small number of neurons did not possess this ability — they fired indiscriminately to both tones; but these were vastly outnumbered by neurons that responded only to the dangerous tone.

In fact, they are one of the increasingly large number of neuron types that are known to die and be replaced throughout life.

So it turns out that Karl Lashley's belief in memory as existing in a distributed network is still alive and well; Silva and Josselyn have not overturned it, only supplemented it, showing that some parts of some memories do exist in a discrete number of neurons.

«If function is localized, with small numbers of neurons bunched together doing similar things, that's consistent with sparse coding, high selectivity, and low population spiking rates.

«But when you zoom out from looking at individual cells, and observe a large number of neurons instead, their global activity is very informative,» says Mattia Rigotti, a scientist at Columbia University and New York University who is supported by the SNSF and the Janggen - Pöhn - Stiftung.

«In our research, we've discovered how plasticity of a very small number of neurons helps run the biological clock and aids transitions to different seasons.»

The majority of neurons were «goal - focused», signaling the location of the goal, but a small number of neurons preferred the other's location regardless of whether it was on the same side as the goal.

«Until 15 years ago, the common belief was that you were born with a finite number of neurons.

«I believe the absolute number of neurons an animal has, especially in the cerebral cortex, determines the richness of their internal mental state and their ability to predict what is about to happen in their environment based on past experience,» Herculano - Houzel explained.

Memory functions in the brain work according to a principle that neuroscientists call «sparse coding», i.e. a comparatively small number of neurons encode complex information — possibly to make overlap between different memories more unlikely.

Insects exhibit sophisticated and complex behaviors, but they have miniature nervous systems with low numbers of neurons...

For instance, when a person sees a clock, only a small number of neurons become active, enough to do pattern matching that draws upon the brain's memory of a clock and compares it with the object's basic features — its round shape, the presence of numbers — to draw a conclusion that this thing is a clock.

Its cat - sized brain hosts a doglike number of neurons.

The search for true numbers of neurons and glial cells in the human brain: A review of 150 years of cell counting.

Before we are born, the developing brain creates an incredible number of neurons, which migrate to specific parts of the brain to ready us for life.

When Rivera examined the brains of the offspring, she found that monkeys whose mothers ate high - fat diets may have a reduced number of neurons that release the chemical messenger dopamine.

«More likely, those long - term memories become inaccessible after a significant number of neurons are lost.»

Owing to its enormous surface area — comparable to that of a one - bedroom apartment — and the huge number of neurons it contains — comparable to that in the brain — the intestine is sometimes referred to as the abdominal brain.