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As an example of ① , a phenomenon called ‘germination’ is found out over nerve, muscular system, red nucleus and hippocampus, etc.
Synapses are newly formed from healthy ( sound ) nerve fibers in this phenomenon.
There are two types of ② namely increasing & decreasing in transmitting efficiency,
The former is found out in a hippocampus, a sea-hare ( one of the mollusks ). Meanwhile, the latter is found out over a cerebellum.
