Treble one, in a word, yes(ish). The seat has probes which collect data for the digital seat sequencer, so the seat know's which way up you are and how fast your going and reacts accordingly within limits.
The seats are very clever, as is the parachute system which is designed to operate differently at high speed low level and low speed. The F/A-18 also has an MB seat, as does the F-35.