And now, years later, Belotti had a something which looked very promising. He had borrowed a drug, 7, 2-DAPA, which had been developed by neuropathologists studying language disorders. It could induce an euphoric anomia, disrupting the process of associating certain visual inputs with words. Users had trouble naming what they saw. Nouns, especially abstract nouns and proper names, were especially difficult. The severity of the anomia was related not only to dosage but to the complexity of the visual environment. For example, a user shown a single long-stemmed rose might be unable to speak the words "flower" or "rose" even though he could otherwise carry on intelligent conversation about gardening; show him into a greenhouse and he might well be speechless. However, if he picked the rose up, or smelled it or heard the word "rose" he would make the connection. And in that moment of recognition enkephalin neurons would start pumping like crazy; the brain would be awash in the pleasure of discovery.