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. Author manuscript; available in PMC: 2012 Mar 27.
Published in final edited form as: J Commun Disord. 2008 Feb 29;41(6):485–500. doi: 10.1016/j.jcomdis.2008.02.001

Fig. 1.

Fig. 1

Parkinsonian voice acoustic waveforms of patients that (a) did not receive DBS in the medication-off state (control) and (b) received DBS in the stimulator-on and medication-off state. Note the presence of subharmonics in the waveform of control patients. Figure was magnified.