What separates human intelligence from other animals? According to new research published in the journal Cell, it depends not only on the abundance of neurons but also on how these cells work.
"There are many divisions of electricity in human neurons that allow these units to become more independent, which increases the computational ability of individual cells," said Mark Harnett, MIT Associate Professor of Brain Science and Cognition at Harvard University.
This results in branching, which is a form of branching that is responsible for communicating information in the form of electrical signals from one cell to another.
This is quite equivalent to a transistor on a computer, these neurons communicate with each other permanently and that's what controls our thoughts and behavior.
However, because these signals move along the branch it becomes weaker than before.
The researchers compared the electrical activity of human neurons with mouse cells using finger-sized parts of the temporal temporal lobe, taken from epilepsy patients who had to be released during their surgery to find out exactly how long the branching affected their electrical properties.
Human dendrites are far longer than the consequences of mice, because human crust is the thickest.
The cortex consists of 30% of brain volume in mice, while it contains about 75% of the volume of the human brain.
Apart from these structural differences, the general organization of the brain is clearly similar to the 6 neuron layers, the cells in the fifth layer contain consequences that can extend across the path to the beginning.
The researchers used a process called electrophysiological electrophoresis to be able to observe how electrical signals pass through branching.
The researchers stored it in solution so that they could keep the tissue alive for two days.
The researchers found that human dendrites carry weaker signals than mice, because human branching must take longer to reach the first layer of the fifth layer.
The research also resulted in the discovery of differences between human samples and rat samples in the density of ion channels that control signal flow.
While the number of ion channels is the same, the density is lower in human samples, which Harnett said could help explain some differences in electrical activity.
Scientists must determine the effect of differences in electrical activity on human intelligence, according to Harnett's suspicion, they allow individual neurons to do more complicated calculations because many branching areas can affect the strength of the incoming signal.
- Translated by Amjad Al Khosousi
- Check: Dreams Advisor
- Editing: Tasnim Almnajjid
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