A method is provided to disrupt tau entanglements and amyloid plaques in a person's brain. An ultrasound profile generated by an ultrasound device is applied to the person's brain. The generated ultrasound profile is characterized by a frequency between 20-100 kHz, a pulse power greater than 10 W/cm−2, a pulse length greater than 1 microsecond, and an interval between pulses greater than 1 millisecond. The method is performed without intravenous injection of microbubbles to the person or use of preformed microbubbles.
Disruption of tau entanglements and amyloid plaques in the human brain by low frequency high power focused ultrasound