The processes of failure, infectious diseases and poisons

- The Delay of warm and respiratory activity. Usually is a consequence of a sudden delay in heart activity. The hippocampus, it is extremely sensitive to an anoxia as in this case to brain fabrics does not arrive oxygen and glucose enough. A brain anoxia - it is a delay of the cardiorespiratory activity, it leads to selective destruction of groups of cages of the brain entering in the hippocampus. The size of the put harm depends on that, how many minutes proceeded a delay of warm and respiratory activity. Full oxygen starvation within more than 4-8 minutes leads necrosis, or death, fabrics and to irreversible changes of a brain that can become the reason of occurrence of a syndrome of an amnesia.

- The Herpes. It - Virus which at penetration into brain fabrics becomes the reason of development of the inflammatory disease which has received the name «encephalitis. Disease development leads to occurrence of the heavy form of necrosis of the limbic systems and nearby neokorkovyh structures. Gerpetichesky encephalitis has scale neuropathological influence on the various structures connected with memory: amygdala, hippocampus and forward shares of a brain ( «the Basic components of the limbic system», with. 23). Usually the infection is bilateral, therefore, as a rule, the global amnesia can become its consequence.

- Syndrome Korsakov. It - the heavy frustration of memory arising owing to chronic abusing of alcohol and deficiency of thiamine, vitamin B1 that grows out of a bad food. Also can arise, as consequence of other organic diseases. It is a condition of a strong amnesia at which inability of memory of the person keep the new information can to lead confabulation or to creation by the patient of own imagined unreal world of which existence he will be assured, and also to seeming paradoxical situation when the patient can carry out difficult actions to which it has been trained to illness, however it will be incapable of new, much more simple activity. Besides the aforesaid there can be a confusion condition, ophthalmoplegia (a paralysis of muscles of an eye), nystagmus (convulsive movement of an eyeball), ataxia (absence of coordination of movements) and polyneuropathy hands and feet.

- The Tumour. It is the uncontrollable formation which has arisen from cages of a fabric, not having any physiological function, harming to nearby structures. Brain structures do not possess immunity which would interfere with formation of similar tumours. The tumour can appear directly on the brain, and can be introduced from the outside in development of metastasises, at change of a place of the centre of defeat or at formation of the secondary centre. Symptoms are in most cases shown in the form of increase in the intracranial pressure caused by growth of a tumour and compression of blood vessels and nerves of a brain. So, when tumours are near to system ventricle, a brain, patients very often suffer from an amnesia. Last is attributed in most cases to defeat of structure of the brain known, as the brain arch. Surgical intervention on removal of colloidal cyst (wen) to 3rd ventricle can harm to the arch of a brain and to become the reason of occurrence of an amnesia.