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Universal Neuroanatomy. Density of Connections How many connections will it take to link a square with every other square of the same size?

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Presentation on theme: "Universal Neuroanatomy. Density of Connections How many connections will it take to link a square with every other square of the same size?"— Presentation transcript:

1 Universal Neuroanatomy

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7 Density of Connections How many connections will it take to link a square with every other square of the same size? How big would that square be in a real brain? Answer: about 2 sq mm. (Valentino Braitenberg)

8 FM Radio Analogy for Neural Coding Frequency-modulated sine wave Spike at each zero- Crossing Integrate (smooth) the spikes Spike (digtital)Interspike interval (analog)

9 Codes in Axons I Distributed – relative activity Frequency – over time Phase – signal in 1 st 3 spikes only

10 Codes in Axons II Labelled line – brain ‘knows’ source Temporal microstructure – pattern matters

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