These movies can be viewed with Microsoft Internet Explorer or 
Netscape Navigator.  The rotating head is corresponds to cortical
activation as a result of sensory touch stimulus of the right thumb.
However, you may have problems opening these if another application 
automatically opens .gif files.  To eliminate this problem use the 
Windows task button > Settings > Folder Options > then edit the file 
types so that .gif files are not associated with the interfering 
application. 

The stationary view corresponds to brain activation during an epileptic
seizure.