Hemispheric specialization refers to the dominance of one hemisphere of the brain in specific functions, such as language, emotions, motor control and so on ( Feldman, 2009). The brain is a part of the central nervous system which is the subdivision of the nervous system. Its main role is to process sensory information from various parts of the body to make them meaningful. The brain receives sensory information from all parts of the body through the spinal cord (Passer & Smith, 2009). Basically, the brain is divided into three parts.
Long term memory primarily makes use of in semantic coding, as shown by the difficulties participants had in recalling the correct order of words that had similar meanings. This shows that words with similar sounds were easier to remember in relation to short-term memory but harder in long-term memory. Though, there are many factors that
There are those that say consciousness is merely an after effect of neural events in the brain (epiphenomenalism) and have touted neurological science as their proof. Is studying the consciousness really just a matter of studying neural events? A major key point in the debate of mind-body is whether mind and body are one, or if they are separate parts. And if they are separate parts, do they work together? If so, then how?
Its function is to control attention and coordinate the data that arrives from the senses or the long term memory, determining at any time which of the other three components it should go to. The central executive can briefly store this data, yet has a very limited capacity. Bunge et al. (2000) produced evidence to support the central executive. He thought the activity in the central executive should be increased when an individual has to perform two tasks simultaneously (dual-task) rather than one after the other (single-task,) and so used an fMRI scan on the brain.
Sensory nerves send messages to the glands and the muscles, telling them what to do. Epithelial Tissue The functions of epithelial tissue include transportation of materials, protection of underlying tissues, absorption of water and nutrients and secretion of waste products. Epithelial tissue covers the whole surface of the body. It is made up of cells closely packed and ranged in one or more layers. This tissue is specialised to form the covering or
BLOA 1. Describe one study of localization of function in the brain Studies have shown that certain functions in the brain are localized to different areas of the brain. One localization of function in the brain is the Broca’s area in the left hemisphere of the brain. Language output is found to be processed in that area. Paul Broca did a case study with the aim of determining the effects on one’s brain as a result of brain damage.
It has widespread connections with the rest of the forebrain and the midbrain. Partly through nerves and partly through hypothalamic hormones, the hypothalamus conveys messages to the pituitary gland, altering its release of hormones (Kalat, 2003). According to “American Accreditation Health Commission,” The hypothalamus is responsible for certain metabolic processes and other activities of the autonomic nervous system. It synthesizes and secretes certain neurohormones, often called hypothalamic-releasing hormones, and these in turn stimulate or inhibit the secretion of pituitary hormones. The hypothalamus controls body temperature, hunger, thirst, fatigue, sleep, and circadian cycle.
Explain effects of neurotransmitters on human behaviour Through the studies done by Kasamatsu and Hirai (1999) and Martinez and Kesner (1991) on the neurotransmitters serotonin and acetylcholine respectively, we can see the effects of neurotransmitters on human behaviour, especially with regards to arousal levels, emotion, and in the development of memory. Neurotransmitters are the body’s natural chemical messengers and examples of these are: acetylcholine, and serotonin. Kasamatsu and Hirai’s study on Serotonin allowed researchers to find that higher levels of serotonin resulted in hallucinations. In Martinez and Kesner’s experiment, researchers concluded that acetylcholine played an important role in creating a memory of the maze. Knowing the effects of these neurotransmitters can be used for medical purposes.
Compare and contrast the functions of each tissue type. Why do some areas of our body have stratified squamous epithelium and other areas have simple squamous epithelium? Epithelial tissues - It protects us, and it absorbs with the stomach and intestinal lining Connective tissues - Support, surround, connect other tissues, Protect organs, Transport fluids and dissolved materials Muscle tissues - Responsible for body movement, Moves blood, and food waste through body’s organs, Responsible for digestion. There are three types smooth, skeletal and cardiac muscle tissues. Nervous tissues - Conducts impulses organs from neurons.
Parietal lobe - responsible for sensory information from the body, also where letters are formed, putting things in order and spatial awareness. Occipital lobe- responsible for processing information related to vision Cerebrum lobe - biggest part of the Brain its role is memory, attention, thought, and our consciousness, senses and movement. Hippocampus = responsible for memory forming, organizing and storing and emotions. 3. Explain why depression, delirium and age related memory impairment may be mistaken for dementia.