Temporary amnesia10/3/2023 Thus, analysis of the type of memory alteration can be used to incriminate more a particular drug during polymedication. The action of drugs on memory is more or less specific and serious depending on the memory system affected. It is established that there is a decrease of mnesic abilities with ageing, but iatrogenic responsibility may be evocated when a memory alteration occurs suddenly and/or recently in an elderly person without other symptoms of dementia. The impact of drugs on memory disorders is particularly pronounced in elderly people because of polymedication. Traditionally, it is considered that benzodiazepines and anticholinergic drugs are mainly responsible for this last form. Concerning transient amnesia, the main aetiologies are idiopathic transient global amnesia, epileptic, vascular, psychogenic and iatrogenic amnesia. Among the different patterns of memory disorders, the following two main forms of amnesia can be isolated: anterograde amnesia, when the subject cannot memorize new information and retrograde amnesia, when the subject is unable to recall events occured before the injury.Īmnesia can also be subdivided into long-term amnesia and short-term (or transient) amnesia. The human memory system is divided into the following three components: short-term memory, allowing recall for a period of several seconds to 1 min without rehearsal (one form is working memory) long-term explicit memory, concerning facts taken out of context (semantic memory) and concerning information specific to a particular context, such as time and place (episodic memory) and finally, implicit memory or procedural memory, based on implicit learning.Įvery stages of the process of memorization and all of the different components of memory can be affected in an isolated way or in association. Memory is defined as the ability to store, retain and recall information.
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