Areas of the cortex located just behind the temples containing the neurons responsible for the sense of hearing and meaningful speech. Frontal Lobes Areas of the cortex located in the front and top of the brain, responsible for higher mental processes and decision making as well as the production of fluent speech.
As a practical matter, some might argue, if a filibuster is threatened and it takes 60 votes to end debate in the Senate, then it does take 60 votes to pass a bill. Nothing in the Constitution says that a three-fifths majority is necessary to pass ordinary legislation.
The procedural motion required 60 votes to pass, and Republicans had been dodging questions for days on how they would vote. If the senators who voted no had prevailed, the Senate wouldn't have been able to debate the package, let alone amend it and vote on it. There were some notable party splits. Two Democrats, Sens. Mark Pryor (Ark.) and Mark Begich (Alaska), joined the Republican filibuster effort.