The prefrontal cortex (PFC) is the anterior part of the frontal lobes of the brain, lying in front of the motor and premotor areas.This brain region has been implicated in planning complex cognitive behavior, personality expression, decision making, and moderating social behavior.o define the prefrontal cortex as the projection zone of the mediodorsal nucleus of the thalamus builds on the work of Rose and Woolsey who showed that this nucleus projects to anterior and ventral parts of the brain in nonprimates. Rose and Woolsey however termed this projection zone orbitofrontal..
Immediately above the Moho, the velocities of primary seismic waves (P-waves) are consistent with those through basalt (6.7â7.2 km/s), and below they are similar to those through peridotite or dunite (7.6â8.6 km/s).
In transverse waves the vibrations are at right angles to the direction of travel, as seen in the animation below of a wave sent down a piece of string. The hand moves up and down, as does each part of the string.But the wave moves along from left to right.Water waves and s-waves-one type of seismic wave-are also transverse waves. Your web browser does not have JavaScript switched on at the moment. For information on how to enable JavaScript please go to the Webwise site.he hand moves up and down, as does each part of the string. But the wave moves along from left to right. Water waves and s-waves-one type of seismic wave-are also transverse waves. Your web browser does not have JavaScript switched on at the moment.