This is the frequency at which the human mind subconsciously thinks. This can be heard and detected by some. This frequency happens before time equals zero, as does a thought happens before time. Negative time and negative frequency are inversely proportional by the formula:
Where Frequency and Time can be real and imaginary.
This frequency cannot be detected by many frequency detecting devices. It can also be known as a subconscious negative signal.
At that instant moment in time I reacted, I must have been thinking at a negative frequency to react so quickly.
While I was sleeping, my mind was thinking at a negative frequency.