The Left and Right Brain Hemispheres: Independent Centers of Consciousness? :: Biology Health Term Papers

The Left and Right Brain Hemispheres Independent Centers of Consciousness? Im of two minds on the matter. I cant attain up my mind. Im having an internal argument. Our language is full of idioms that make it sound as if there were two disagreeing voices in stead our heads. Often, that is indeed how it feels. But is that sensation physiologically supported? potty a wizard fight with itself? Can there be multiple independent centers of consciousness in a single head? Until the 1960s, there was no focusing for us to test this stamp of internal disagreement. But when a surgery aimed at alleviating epileptic seizures also isolated the two hemispheres of the patients brain, science was surprisingly afforded that opportunity.Background The left and right hemispheres of the brain are connected by a dense bundle of neurons called the corpus callosum. This bundle is primarily responsible for communication of information between the two hemispheres, connecting them with almost 20 0 million callosal axons (in humans.) (1) In some cases of multifocal epilepsy, the electrical discharges that cause seizures can start in one hemisphere and spread to the other by way of the corpus callosum, greatly increasing the severity of the fit. Sometimes this condition is unresponsive to medication, at which point the spasms can only be controlled with more drastic measures.(2) In 1961, Dr. Michael Gazzaniga performed an operation which had been pioneered on animals by Drs. Ronald Meyers and Roger Sperry, but which had never before been tested on human patients. In this procedure, called a commissurotomy, the surgeon opens the skull, lays back the brain coverings with a cerebral retractor, and cuts through the corpus callosum. While this prevents a seizure from spreading, it also prevents information from being passed between hemispheres. Thanks to Dr. P. J. Vogel, we now know that severing the preceding of the corpus callosum can effectively stop the spread of a seizu re, while allowing full communication between the hemispheres to remain. (3) However, the behavior of full-commissurotomy patients has been extensively documented, and provides fascinating insight into the specialisation of the hemispheres, the nature of the brain, and the nature of consciousness itself.ResultsTo understand these behaviors, one must first remember that neurological wiring of the body is, for the most part, contralateral. Signals travel from the left side of the body to the right hemisphere of the brain and back, and vice versa.

The Dark Romantics :: essays research papers

The dark Romantics describe animation as satanic, unholy, insane, and deceptive, which is more like life today. For example, the towns people in the Black Veil can be seen as evil and sinful. The reason they are thought as evil and sinful is because they say things about him because he is wearing the black veil. This can be seen in Hawthorns the minister and the Black veil when Mr. Hooper says, why do you rock at me? Cried he turning his veiled face around the circle of pale specters. Tremble also at each other Have custody avoided me and women shown no pity, and children screamed and fled only for my Black veil? In addition Ahab in "Moby Dick" is considered not only as an evil and sinful person simply is selfish and greedy. The reason why he is sinful, evil, selfish, greedy, mainly is because he didnt care what the other people on the ship wanted or that what he was going to do would or could bring dangers, and what he was doing was a waste of time, because instead of getting vengeance on "Moby Dick". He could be pursuit whales for food and selling whats left of them and make money. Furthermore evil and sinful people today, like Charles Manson. The reason why he is considered an evil and sinful person is because he killed a lot of people. Another reason he is evil is because he said he was God. This is one of the umpteen reasons why I agree with the Dark Romantics. The second reason out of the many reasons of why I agree with the Dark Romantics is because a lot of people are insane. For example, delirious or insane people caused the Columbine tragedy. One of the crazy things they did was running around the school shooting and blowing things up. While trying to take as many lifes as they could. Another crazy or insane thing is the fact that they took self-exaltation in what they did. The reason I say they took pride in it . Is because they made a video that showed them laughing and saying that they were going to do all the stuff they did, and how they were going to do it. In addition, the mother who chilliness her kids is more proof that people can turn insane at any minute.