Olli Ruusunen attended a special training course in the US, where his brain capacity has been developed to the extreme.
Key credits listed on this page include Antti Peippo, Pentti Nykvist, Kullervo Kukkasjärvi, Marjaleena Virtanen, Antti Litja, Martti Pennanen, Saara Pakkasvirta, and Tarja-Tuulikki Tarsala.