Answers are grounded in this paper and cite their sources.
The authors report a longitudinal case study of a woman with a history of bipolar affective disorder in which L-dopa shortened the manic-depressive cycle length when administered in a double-blind trial. This finding suggests a dopaminergic mechanism specifically in changing the frequency of cycling between depression and mania.
No takes yet. Share an insight, caveat, or question.
Ko et al. (1981) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: