The below documents describe complete procedures to reproduce the measurement and training described in the manuscript. *Background_Questionnaire_YUS* Speech, language, and health history questionnaire used to document participants' language influences and identify exclusionary criteria. *Session1_Checklist_YUS* Describes complete procedures for session 1 (baseline measurement). *Protocol_Auditory_Discrimination_YUS* Specific instructions for measurement of auditory acuity in session 1. *Protocol_Stereognosis_Task_YUS* Specific instructions for measurement of somatosensory acuity in session 1. *Session2_Checklist_and_Protocol_Ultrasound_Biofeedback_YUS* Describes complete procedures for session 2 (biofeedback training) for participants assigned to receive ultrasound biofeedback. Includes specific instructions and cues for ultrasound biofeedback training. *Session2_Checklist_and_Protocol_VisualAcoustic_Biofeedback_YUS* Describes complete procedures for session 2 (biofeedback training) for participants assigned to receive visual-acoustic biofeedback. Includes specific instructions and cues for visual-acoustic biofeedback training.