Beh 225

The cerebral cortex outer layer of the cerebrum has the two largest hemispheres that cover the upper part of the brain which are divided into smaller portion called lobes. Corticalization is an increase in size of the wrinkling of the cortex and without this we would not be smarter than any other animal. Cerebral hemispheres are divided into right and left sides of the cortex connected by thick band axon fibers called corpus. Hemispheric specialization, testing only one side of the brain by a process called the Split Brain operation, which is essentially a person with two brains in one body. The corpus callosum is cut to control severe epilepsy, but this operation is rare and is often used as a last resort. One brain two sides; the left brain analysis breaking information into parts about 95% of people use the left brain to speak, write, and understand. This includes time sense and rhythm. The right side of the brain processes information by using nonverbal responses such as, pointing at objects, simple language comprehension and recognition of pattern. Lobes of the cerebral cortex are larger fissures on the surface of the cortex. The cerebral cortex is responsible for reasoning planning, mental abiliites, sense of self and motor control. This area contains mirror neurons, which becomes active when you observe someone else and then you carried out the same action. The frontal lobes of the brain are associated with decision making and control behavior, and the temporal lobes with emotion and language. While FTD is marked by range of behavioral, personality, and cognitive changes, several subtypes of the disorder have been identified based on distinct symptoms and clinical presentation. Behavioral changes are typically seen as changes in personality, emotional blunting or loss of empathy that result in increasingly inappropriate behavior. People gradually become less involved and shy away from others.
Broca’s aphasia: in this form of aphasia, speech output is severely reduced and is limited mainly to short utterances of less than four words. Vocabulary access is limited and the formation of the sounds by persons with Broca’s aphasia is often laborious and clumsy. The person may understand speech relatively well and be able to read, but be limited in writing. Broca’s aphasia is often referred to as ‘’ non fluent aphasia” because of the halting and effortful quality of speech.
Wernicke’s aphasia: in this form of aphasia the ability to grasp the meaning of spoken words is chiefly impaired, which the ease of producing connected speech is not much affected. Therefor Wernicke’s aphasia is referred to as a “fluent aphasia”. However, speech is far from normal. Sentences do not hang together and irrelevant words intrude sometimes to the point of jargon, in severe cases. Reading and writing are often severely impaired.