The vestibular canals are in the X, Y, Z axis and are involved with physical awareness in space. A specific canal can be challenged by holding the cervical spine and head in a particular direction (flexion / extension; Rt / Lt lateral flexion; Rt / Lt rotation) while spinning in a chair to the right and to the left and using muscle response testing after each challenge. This process will take some time to perform all phases. Be gentle when spinning the person; recreating the vertigo symptoms can be violent when isolating the neurological stress.
Have the person sit in an executive chair with armrests. This way when you identify the vestibular canal involved the person will not fall and hurt themselves.
Have the person tuck their chin to their chest and test a strong arm in the clear. (If the arm goes weak this would need to be corrected by lasering the C1/C2 myotome or any correction from the basic seminar including adjustments.)
Then maintain head position and gently spin 1/4 turn to the left. Stop the chair, retest the previously strong arm, maintaining the chin tucked the entire time. (If the arm tests strong spin the opposite direction with chin tucked).
If the arm displays a weakness laser one ear at a time and gently spin left (driving the pathway) making a slight pause every 1/4 turn so the body can compensate.
Repeat this for all head positions: flexion / extension; Rt / Lt lateral flexion; Rt / Lt rotation) while spinning in a chair to the right and to the left and using muscle response testing after each challenge.