The Collaborative International Dictionary of English v.0.48:

Pulsate \Pul"sate\, v. i. [imp. & p. p. Pulsated; p. pr. & vb.
   n. Pulsating.] [L. pulsatus, p. p. of pulsare to beat,
   strike, v. intens. fr. pellere to beat, strike, drive. See
   Pulse a beating, and cf. Pulse, v.]
   To throb, as a pulse; to beat, as the heart.
   [1913 Webster]

         The heart of a viper or frog will continue to pulsate
         long after it is taken from the body.    --E. Darwin.
   [1913 Webster]