Symptoms of significant brain atrophy include progressive cognitive impairment involving multiple cognitive functions, otherwise known as dementia, seizures and aphasia, which is the disruption in the understanding or production of language or both.
The Senate majority leader has somewhat less official power than the Speaker of the House. This is because the vice president is technically the Senate's presiding officer, a ceremonial position that calls chiefly for casting a vote in the event of a tie.
For these reasons, it is the Majority Leader who, in practice, manages the Senate. This is in contrast to the House of Representatives where the elected Speaker of the House has a great deal of discretionary power and generally presides over votes on bills.he Senate Majority and Minority Leaders are two United States Senators who are elected by the party caucuses that hold the majority and the minority respectively.