The bias is applied in {HEAD ~ response} to the amplified logic signal on {TAIL ~ the output node} 
The bias is applied in { HEAD ~ response } to the amplified logic signal on { TAIL ~ the output node }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL