Fig. 1.

(a) The LUMO tile module; (b) assembly of complete LUMO module showing the tile, dock, and light guides; (c) neoprene cap fitted with a 12-tile LUMO system; (d) high-density array showing channels with source–detector separation $\le 40\mathrm{mm}$; and (e) sparse array used for comparison against low-density NIRS measurements. The NIRS channels have a source–detector separation of $\sim 30\mathrm{mm}$. Two SS channels 10-mm long on each hemisphere have been included.