Brain wave and Close-up

Brain wave noun - (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph.

Close-up and brain wave are semantically related. In some cases you can use "Close-up" instead a noun phrase "Brain wave".

Close-up adjective - Not being distant in time, space, or significance.

Brain wave and close-up are semantically related. Sometimes you can use "Brain wave" instead a noun phrase "Close-up".