1. A system comprising: a transducer array comprising: a first transducer configured and arranged to direct a first focused ultrasound stimulus to a first target neural structure in a brain of a subject; and a second transducer configured and arranged to direct a second focused ultrasound stimulus to a second target neural structure in the brain, wherein the first and second transducers are arranged at different positions around a scalp of the subject, the targeting of the neural structures are configured to be achieved by affixing the first and second ultrasonic transducers to a stereotactic frame, wherein the first and second target neural structures are different target neural structures in the brain with a neural pathway that connects the first target neural structure with the second target neural structure, wherein the first target neural structure comprises a neuron pre-synaptic to a neuron in the second target neural structure, and wherein the first and second focused ultrasound stimuli are non-destructive to functional responsiveness of the first and second target neural structures; and a control circuit, wherein the control circuit is configured and arranged to electronically direct the first focused ultrasound stimulus and the second focused ultrasound stimulus to the first target neural structure and the second target neural structure, respectively, wherein the first and second transducers are configured to be moved into correct targeting position via frame-based techniques, and control the transducer array, to concurrently alter one or more characteristics of sound waves at the first target neural structure with respect to characteristics of sound waves at the second target neural structure in a synchronous or asynchronous manner.