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.
In the Senate, the majority leader is the top leadership position similar to Speaker of the House. As of December 1, 2014, Mark Schoesler (R-Ritzville) is Senate Majority Leader. In the House, the majority leader is the second highest leadership post under the Speaker.