Optically pumped magnetometers (OPMs) provide a new form of
magnetoencephalography (MEG). These sensors can be worn, and do not
require cryogenic cooling. This has allowed imaging during movement
and across the lifespan, and has started to revolutionise human
neuroimaging. In this talk, I will discuss some of the exciting new
developments, such as imaging during complex whole body movements,
patients with movement disorders and imaging of the entire CNS
including spinal cord. I will also discuss some of the challenges,
such as noise, shielding and source modelling. OPMs offer exciting new
advances in temporally precise neurophysiology of the human CNS, with
the promise of imaging in relatively unconstrained scenarios
previously not possible.