pulsate
     v 1: expand and contract rhythmically; beat rhythmically; "The
          baby's heart was pulsating again after the surgeon
          massaged it" [syn: {throb}, {pulse}]
     2: move with or as if with a regular alternating motion; "the
        city pulsated with music and excitement" [syn: {beat}, {quiver}]
     3: 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}]
Source: WordNet® 2.0