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).
Copyright Â© 2012 K12reader.com. All Rights Reserved. Free for educational use at home or in classrooms. www.k12reader.com Earthquakes: Movement of the Earthâs Crust Word Meanings Earthquakes are the shaking and moving of the ground when energy is released in waves.These waves are called seismic waves.These waves are similar to ocean waves, which move through water. Seismic waves, however, move through the ground.Most earthquakes are caused by the movement of large sections of the Earthâs crust, called plates.The place where two plates meet is called a fault. Faults look like large cracks in the ground.hese waves are called seismic waves. These waves are similar to ocean waves, which move through water. Seismic waves, however, move through the ground.Most earthquakes are caused by the movement of large sections of the Earthâs crust, called plates.