Table 3 Mean of electric activity (in μV) of the masseter, submental-submandibular and infrahyoid muscle groups covered by the platysma during a continuous drinking test of 100 cc of water.

M. masseter

   Raw mean*

6.122

7.359

   SD

2.310

2.514

   Real mean**

3.627

4.864

The submental-submandibular muscle group

   Raw mean

10.238

12.658

   SD

2.174

3.186

   Real mean

7.430

9.850

The infrahyoid group

   Raw mean

6.012

5.884

   SD

1.696

1.935

   Real mean

3.204

3.076