[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.
The cerebrum, which is the largest part of the brain, is divided into four areas, or lobes, each of which houses different functions. The cerebrum is also divided into two hemispheres: the right, which helps you think creatively and the left, which helps you think logically. Hence, you have a right-sided frontal lobe and a leftt-sided frontal lobe. Your personality lives in the frontal lobes, where emotions, problem solving, reasoning, planning and other functions are managed. The frontal lobes are linked to sensory and memory centers throughout the brain.