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Anterograde Amnesia

Anyone who has seen the movie ‘Ghajini’ or its initial better version ‘Memento’ would know more about this condition. Anterograde amnesia is the loss of the ability to create new memories from a specific event. The long term memories from before the event do remain intact but they cannot keep in mind the events or people they met after the incident. New information is processed normally, but almost immediately forgotten, never making it into the regions of the brain where long-term memories are stored. They may be able to learn how to do new things, such as riding a bicycle, but they may not remember what they had for lunch earlier the day.

Causes

•          It may be caused due to a traumatic brain injury or surgery in which there is damage to the hippocampus or medial temporal lobe of the brain.

•          It may be drug-induced; Overdose of several benzodiazepines could cause the same.

•          It can also be caused by shock or an emotional disorder.

The biological process that is involved for anterograde amnesia is the consolidation process that involves the production of new proteins to rebuild the synapses in the new shape and when this process stops, one develops anterograde amnesia.

 

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