Gerrit Jan Keizer


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Joined Aug 13 2014
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MALE
The Netherlands
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HIDDEN IN PLAIN SIGHT

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About Me

I am a clinical psychologist, mycologist and forest ecologist interested in the role entheogens (Amanita muscaria, Psilocybe spp.) have played in the development of the human brain and religion. Author and photographer of the : 

- Encyclopaedia of Fungi (1997),

- Interactive Guide to Mushrooms and other Fungi (CD-rom, 2001),

- De verborgen boom (2012),

- De geheimen van Hildegard von Bingen (2012),

- Chapter 4 : Hildegard of Bingen : Unveiling the Secrets of a Medieval High Priestess and Visionary. In : John A. Rush (2013). Entheogens and the Development of Culture. The Anthropology and Neurobiology of Ecstatic Experience.

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