To monitor the behaviour of Panellus mycelium, Olsson grew cultures in dishes in the lab, and placed two of them, glowing, in a perfectly dark box under constant conditions. He left them alone for a week with a camera sensitive enough to detect their bioluminescence taking pictures every few seconds. In the timelapse video, two unconnected mycelial cultures grow outwards into the shape of irregular circles in their separate dishes, glowing more intensely in the middle than at their edges. After several days – about two minutes of video – there is a sudden shift. In one of the cultures, a wave
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