Saturday, 24 January 2015

LO1: Explain how biological factors may affect one cognitive process.



In this learning objective will give explained details about how Alzheimer's disease affect cognitive process. Cognitive process is a process that happens inside our brain that controls our thoughts language memory and many other things that guide us to be who we are today our behaviors. Memory is one of the cognitive process that retrieve store and retain information in the past experience or knowledge.

Alzheimer's disease is one of the most commonly known disease of the people whose age is around over 60 year old that this Alzheimer's disease will affect the patients brain cognitive process including memory as a majority area. The two main causations of Alzheimer's disease are Amyloid plaques and Neurofibrillary Tangles.
Amyloids Plaques us the abnormality that happens in the gap between neurons, there is the protein between our nerve cells called Amyloid which it is a protein that will be produced normally by the brain and eliminate it away as a normal process. But for people who have Alzheimer's disease ,this protein will not be destroyed ,so Amyloid form itself become bigger harder and stickier and eventually block the communication between neurons cause the problems in feeling emotions language and many other cognitive process problems ,and in later stage of Alzheimer's disease the memory of the patient will be all gone. 

Neurofribrillary Tangles is also one of the main cause of Alzheimer's disease which happens between cell to cell Axon. In each dendrites of each neuron ,inside of it will have a protein called Tau which form parallel straight lines in each other and send nutrients and other important substances from one cell to another. But in the case of Alzheimer's disease patient's brain the protein Tau works abnormally twisted unorganized cause the information nutrients and other important substances cannot be transported. 

 Mosconi Study 2005 
The aim is to see the effect of Alzheimer's disease in hippocampi region. Hippocampus is one of the main part of the brain responsible of cognitive process like memory, and it will get severe affected if a person has Alzheimer's disease cause the brain the shrink. The procedure of the study is that the experimentees will observe 52 participants for around 9 - 24 years and after that use a computer scanner to see which part of the brain got affected by Alzheimer's disease. They used PET scan and found out the result as expected that around hippocampi region also hippocampus is the development to Alzheimer's disease later on in human's lives.

Conclusion 
According to the study ,this experiment supported that biological factors do affect cognitive process also the facts about Amyloid plaques and Neurofrubrillary Tangles that cause the problems to cognitive process which both are happened to be biological causation of Alzheimer's disease