ACTION: Neck flexion
REFERRAL: Anterior neck
COMMENTS: These muscles can be damaged in whiplash cases. They lie right over the anterior cervical vertebrae. To get to these muscle, push aside the trachea and apply gentle pressure with your fingertips. Be wary of the carotid artery and internal jugular vein. Obviously this is a technique to be properly trained in before experimenting. See also the infrahyoids.
If you want to learn to work these muscles, the DVD Deep Tissue & Neuromuscular Therapy: The Torso, has this information.