An ultrasonic neuromodulation apparatus, comprising a planar ultrasonic transducer (100), a Fresnel acoustic lens (200), and an acoustic wave collimator (300), the planar ultrasonic transducer (100), the Fresnel acoustic lens (200), and the acoustic wave collimator (300) being arranged in sequence, a transmitting end of the planar ultrasonic transducer (100) being used for transmitting a planar ultrasonic wave signal, the excitation frequency of the planar ultrasonic transducer (100) being adjustable, and the focal length of the Fresnel acoustic lens (200) increasing or decreasing as the frequency of the planar acoustic wave rises or falls. The ultrasonic focus depth can be adjusted by means of adjusting the frequency of the planar acoustic wave transmitted by the planar ultrasonic transducer (100), providing a simple and convenient method for stimulating brain nuclei of different depths for ultrasonic neuromodulation.
ULTRASONIC NEUROMODULATION APPARATUS