This article highlights the important contribution of the French psychiatrist Henry Ey, to studies on John Hughlings Jackson. It historically analyzes a little-known text that presents an interface between Jackson and psychiatry, namely: Dialogue on "Obsessive Ideas." This article appeared in the journal Brain, between 1894 and 1895. The author discusses historical reasons that might explain Jackson's lack of influence on British psychiatry, in contrast to the considerable spread of his ideas on neurology.
Obsessive ideas; John Hughlings Jackson; Henry Ey; psychopathology