Cybergenics was before my time basically but Someone once posted a scan of the original Cybergenics workout plan. I remember looking at it and realizing it was nothing but a complete CNS burnout method. It was wild. I remember the quad workout being something like :
Start off with drop set squats and each set with your heaviest weight you can do for 10 reps, 5 assisted reps, 5 negatives. Immediately reduce the weight by 50% and with no rest immediately do another 10 reps, 5 assisted reps, 5 negatives. This drop set counted as 1 set.
You had multiple sets like the above to complete.
What I remember thinking is you could squat a decent weight how the hell you going to find someone to spot you when they got to haul you up when you are doing negatives. I bet everyone in the gym would avoid you after you roped in some unsuspecting person the very first time.