analyzing physiological data from a plurality of viewers exposed to media to define a plurality of events in the media and to derive a plurality of physiological response dimensions from {HEAD ~ the physiological data} for {TAIL ~ the plurality events} 
for
analyzing physiological data from a plurality of viewers exposed to media to define a plurality of events in the media and to derive a plurality of physiological response dimensions from { HEAD ~ the physiological data } for { TAIL ~ the plurality events }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL