pulsate

pulsate (http://definr.com/pulsate)

     v 1: expand and contract rhythmically; beat rhythmically; "The
          city pulsed with with music and excitement" [syn: throb,
           pulse]
     2: produce or modulate (as electromagnetic waves) in the form
        of short bursts or pulses or cause an apparatus to produce
        pulses; "pulse waves"; "a transmitter pulsed by an
        electronic tube" [syn: pulse]