Brightfield Microscopy Digital Image Gallery

Cerebrum

The many complex functions carried out by humans on a daily basis are now understood to be regulated by the brain, which has changed significantly over the course of evolution. Today, the vast majority of the brainís weight (about 85 percent) is dedicated to the cerebrum. In early man, however, the cerebrum was not as well developed, consisting of only about a third of its current weight. This significant physical change has been accompanied by important changes in the mental processes, humans becoming increasingly capable of more and more complex activities over time. Indeed, most scientists believe it is the relative size of the cerebrum that most differentiates humans from other animals, since it is considered the origin of all conscious activity. It is important to note, however, that the purely physical size of the brain is not an indication of intelligence, since, for example, the brain of an elephant is about four times the size of a human brain, but the animal does not exhibit a correspondingly larger mental capability.


© 1995-2013 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Tuesday, Nov 25, 2003 at 05:49 PM
Access Count Since November 25, 2003: 11636
Microscopes and digital imaging equipment provided by:
Visit the Olympus Microscopy Resource Center website. Visit the QImaging website.