My latest #neuro #visualization is an intuition pump to help us appreciate the intricate interconnectivity of cells in your #brain. We begin by peeling through the #MICrONS cubic millimeter of mouse visual cortex, where ~75,000 neurons are packed tightly. We then see the layered organization of the cerebral cortex, segmented by their inputs and outputs. While the inputs and outputs are designated to distinct layers, the brain is functionally organized by vertical ‘columns’ through all these layers. Each column is a modular, computational unit, that processes and responds to one specific type of information. We take a moment to appreciate the coordinated firing of a sample of functionally-matched neurons from within a cortical mini-column. We then zoom in from the level of the circuit to the level of the synapse, onto a layer 5 Pyramidal neuron at the heart of the microcolumn, the principal excitation unit of the brain. This unremarkable pyramidal neuron has over 11,000 input synapses. It’s job is to integra
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