![]() ![]() Maybe new crowd-sourced efforts such as the Human Connectome Project eyewire game will eventually provide us with a more accurate number that doesn’t rely so heavily on estimation. But you notice that to do this, the researchers are still using the extrapolation method. Plasticity refers to the brains malleability or. This can involve functional changes due to brain damage or structural changes due to learning. It is an umbrella term referring to the brains ability to change, reorganize, or grow neural networks. The great advantage of this method is that unlike counting the number of neurons in one part of the brain and then extrapolating from that, it gets over the problem that different brain regions may have more or less densely packed neurons. Neuroplasticity is the brains ability to change and adapt due to experience. You then take a sample of the soup, count the number of cell nuclei belonging to neurons (as opposed to other cells in the brain such as glia) and then scale up to get the overall number. The method involves dissolving the cell membranes of cells within the brain and creating a homogeneous mixture of the whole lot. The new method that gives us the 86 billion figure is… interesting. ![]() But you’re introducing two variables for your guess here! Not very accurate. Using this method, you estimate what proportion of neurons get stained, count the number in some patch of brain, then extrapolate. ![]()
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