[Gravitational] waves are perturbations of spacetime which travel at c. However, spacetime is allowed to expand and contract faster than c. An expansion followed by a compression is pretty much the definition of a compression wave.
Damage to the brainâs frontal and temporal lobes causes forms of dementia called frontotemporal disorders. Frontotemporal disorders are the result of damage to neurons (nerve cells) in parts of the brain called the frontal and temporal lobes. As neurons die in the frontal and temporal regions, these lobes atrophy, or shrink.
There are 8 parts of the brain. Here's a list of what they are and what they do. The frontal lobe is one of the 4 major divisions of the cerebral cortex. This part of the brain regulates decision making, problem solving, control of purposeful behaviors consciousness, and emotions.