It all begins in the brain as a flood, tens of millions of neurotransmitters handed off from one neuron to another in just a fraction of a second. Memories, dreams and learning share a common thread in this exchange of electrical and chemical signals by the nearly 100 billion spindly neurons of the brain, each cell networked to 10,000 others. Memories, dreams and learning share a common thread in this exchange of electrical and chemical signals by the nearly 100 billion spindly neurons of the brain, each cell networked to 10,000 others.. To read further, please visit https://www.tacc.utexas.edu/news/feature-stories/2014/brain-cell-linker-dependence.