Autism possible causes and prevention
Autism possible causes The early human brain rapidly develops and forms extra neurons. The extra neurons probably develop to make sure there are sufficient neurons everywhere in the brain in case of damage or deficiency. Any neurons that form in excess to what is needed are later removed through a process called 'apoptosis'. Apoptosis - is a controlled or programmed death of cells. It is an ancient process that multi-celled organisms developed early on in evolution process. It allows organisms to control excess cell growth. It is also used to control infections, viruses and abnormal cell proliferation. Apoptosis is the method used during development – i.e., fetal development to remove unneeded cells. In our example, it is the method of removing excess neurons. The apoptosis process of reducing neural density of the brain will reduce neural density to a density that is optimum (in an evolutionary defined manner) for both learning and for speed of decision/reaction. By...