Meanings of place bilaterally in английском

Optode arrays were placed bilaterally over the temporal lobes, targeting auditory brain regions.

Cannulas were placed bilaterally and symmetrically by stereotactic techniques.

Regions of interest were manually placed bilaterally by one investigator at 2 occasions, and by a second independent investigator.

But it is placed bilaterally between vendors and utilities, whose energy trading floors often also offer secondary weather products to smaller peers.