Changes in Cerebral Blood Flow With Spinal Manipulative Therapy vs. Voluntary Motion
Changes in Cerebral Blood Flow With Spinal Manipulative Therapy vs. Voluntary Motion
The investigators are performing a study to determine whether changes in blood flow occur in
 the neck and back of the brain following a series of head positions and a manipulation of the
 upper neck. Each participant will be asked to undergo a series of MRI's to evaluate whether
 there are any changes in blood flow resulting from any of the head positions or manipulation.
 The study will be conducted over a period of 1 day and each participant can anticipate the
 testing to take approximately 120 minutes.
The goal is to further investigate the cerebrovascular hemodynamic consequences of cervical
 spine positions, including rotation and manipulation in-vivo under clinically relevant
 circumstances using two advanced forms of MRI technology on the VA and posterior cerebral
 vessels. According to the knowledge of the investigators, a study utilizing MRI and
 functional blood oxygen level dependent (fBOLD) imaging to examine blood flow and perfusion,
 turbulence and evidence of micro-trauma within these vessels has yet to be conducted.
Inclusion/Exclusion Criteria

 1. Enrolled and matriculated as a student in the Canadian Memorial Chiropractic College.

 2. Healthy asymptomatic male patients who would otherwise receive cervical manipulation
 on a regular basis as a part of their normal learning experience and will have had a
 cervical manipulation in the last 3 months.

 3. Sufficient English language ability to complete study questionnaires (see appendix).

 4. No history of disabling neck, arm or headache pain within the last 6 months.

 5. No current or prior history of neurological symptoms including, facial or extremity
 weakness, abnormal sensation to the face, body or extremities, uncontrolled movements,
 abnormal gait, dizziness, unexplained nausea/vomiting, difficulty with speaking or
 swallowing.

 6. Subjects will have had no prior history of head trauma or prior history of surgery to
 the neck region.

 7. No history of claustrophobia, metallic implants or tattoos to ensure compatibility
 with MRI requirements.