HOMOLATERAL (ASYMMETRICAL) MOVEMENTS
Mammal Form/Function movement dynamics fall into the category where the arms and legs act homolaterally (IE: right arm/right leg). The head movement swivels left/right between the Atlas(C1) and Axis(C2) enabling positioning of the ears to locate the origin of a sound. The primary head sense is Hearing. These are commonly called Homolateral Movements, which form the basis of complex movement over an area. Consider how a Cat moves. The movements are associated with the Mid Brain.
Because this movement dynamic is associated with movement over the horizontal plane, this developmental level is associated with the LEFT/RIGHT(Sagittal Plane). This is the line that assesses the left and right sides of the body relative to the center of gravity of the body. The most common example of this dynamic is our “handedness” or usually right dominant hand.
When evaluating therapies for Mammal layer neurophysiology we can examine the function of complex movements. It is common that we can identify one of the homolateral symmetries lag in its development. A common example is being able to turn one’s head more easily to one side than the other. The attribute that lags will be the one that most benefits from therapeutic emphasis.
MORE DISCUSSION ON OUR MAMALLIAN LEGACY
ASSOCIATED DEVELOPMENTAL REFLEXES
Asymmetrical Tonic Neck Reflex