I haven't worked on RLSD for some
years, nor tried to keep up with the literature, This was primarily
because I found little new research concerning the spinal cord - which
is obviously where the pathology is located. It is as if many
neuroscientists are uninterested in the lowly spinal cord when they
could be working on
the brain.
However, please see this 2019 article, which reviews and discusses all
RLS/PLM work on spinal since the excellent 2000 article linked to
below:
../#bara_jimenez Periodic
limb movements in sleep - State-dependent excitability of the spinal
flexor reflex