Has anyone had experience using Penny & Giles 's twin axis
electrogoniometers and software for movement analysis? Who else
manufactures similar light weight goniomenters. I am planning
research on the control of the right arm of trombone players during
musical performance. I would like to measure movement in the
shoulder, elbow, and wrist as musicians move the trombone slide. I
expect movements to be fairly rapid. I would like to be able to
determine the extent to which movements in each of the joints are
simultaneous or sequential. Thanks in advance for any information
you can provide.

Mark Kruger
Department of Psychology
Gustavus Adolphus College
St. Peter, MN 56082