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The human brain is a tangled highway of wires emanating from nearly 100 billion neurons, all of which communicate across trillions of junctions called synapses. "Depressingly complex," Harvard neuroscientist Jeff Lichtman calls it.
The brains of the seemingly simple zebrafish are more sophisticated than previously thought, according to a new study. The researchers found larval zebrafish can use visual information to create three-dimensional maps of their physical surroundings.
Individual zebrafish (Danio rerio) exhibit predictable behavioural responses to certain visual stimuli that are sufficient to explain the collective