You can get a few centimeters past the skull with ultrasound stimulation: http://diyhpl.us/~bryan/papers2/neuro/ultrasound/Histological%20findings%20in%20the%2

You can get a few centimeters past the skull with ultrasound stimulation: http://diyhpl.us/~bryan/papers2/neuro/ultrasound/Histological%20findings%20in%20the%20brain%20after%20focused%20ultrasound%20ablation%20combined%20with%20definity%20using%20parameters%20suited%20for%20transcranial%20application.pdf http://diyhpl.us/~bryan/papers2/neuro/ultrasound/Histologica...