Psychiatric doses, perhaps, but I don't think trace doses have any meaningful effect. The doses are an order of magnitude or two smaller, and my personal experience doesn't agree: when I ran a blind self-experiment for around a year using lithium orotate doses higher than the trace water proposals, I noticed nothing subjectively and none of my recorded data changed (http://www.gwern.net/Nootropics#lithium-experiment), so I'm fairly skeptical of the claim.
