[IEEE 2007 Joint Meeting of the 6th International Symposium on Noninvasive Functional Source Imaging of the Brain and Heart and the International Conference on Functional Biomedical Imaging - Hangzhou, China (2007.10.12-2007.10.14)] 2007 Joint Meeting of the 6th International Symposium on Noninvasive Functional Source Imaging of the Brain and Heart and the International Conference on Functional Biomedical Imaging - Event-Related EEG-Changes during Attempted Standing Up Task