Welcome to NeuroTalk:
We have another forum with some discussion about this also:
Try here:
http://neurotalk.psychcentral.com/forum77.html
edit to say.... I see you found this by yourself... so that is great!
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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