Essay questions Example | Topics and Well Written Essays - 500 words - 2

Questions - Essay Example One important principle of the modern model of organization is that the sensory system is parallel. This means that information moves between different structures along multiple pathways simultaneously. Another important principle of the modern model is that the system is functionally segregated. This means that structures in the system are comprised of different parts that specialize in different kinds of analysis. A third important principle of the modern model is that the system is organized hierarchically, which means that information flows through brain structures in a specific order based on how functionally and nueroanatomically complex they are. One way the olfactory system is different from other systems is that there is no thalamic relay when sensory activity is transferred to the olfactory bulb. This means that the olfactory system bypasses the thalamus; which controls the flow of information to the cortex. Another way the olfactory system is different is that the receptor neurons of the system are continuously replaced through mitotic division. This continual replacement occurs because olfactory neurons are exposed directly to the environment; therefore the neurons have a very high vulnerability and need to be replaced continuously. One effect of damage to the posterior parietal cortex is known as Apraxia, which usually occurs as a result of damage to the left side of the cortex. Apraxia inhibits voluntary action. One example would be not being able to lift your arm on command. Another effect of this type of damage is called Contralateral Neglect. This damage usually occurs on the right side of the cortex and makes the person unable to respond to stimuli on the opposite side where the damage occurs. People with this type of damage often ignore putting make-up on or shaving one side of their face; usually the left side. Another feature is called motor equivalence. This means that programs are stored at