Is the procedure reported by alien abductees of seeing or having a probe inserted far into the nasal cavity actually puncturing through into the braincase to deliver mercury and/or other toxic substances to impair functioning of the mind?

Once again your delightful creativity in drawing on your extensive experience with scientific procedures is providing a springboard to put two and two together in understanding anatomy and the easy access through the thin bone layer behind the sinuses that allows easy insertion of a probe that could be used to deliver such a toxic substance readily and then return the victim to the family with no one the wiser that a devastating influence that may well be life-changing has been inflicted on the vulnerable young person. This process is simple, quick, and can be done readily with minimal training and experience by many alien Greys as the need to abduct many thousands of young people each year has become a high priority to stay on top of the new wave of divine human being born.