Most importantly, they can make new memories after the incident. Some people lose memory extending to a long time ago, while others may lose only a few months of memory. They lose existing and previously made memories. These patients are unable to retrieve information that was acquired before the onset of the amnesia condition. Retrograde amnesia is the inability to recall past memories. Medial temporal lobe and medial diencephalon are the two major regions associated with this condition. It can happen due to the effects of long-term alcoholism, stroke, head trauma, severe malnutrition, encephalitis, surgery, cerebrovascular events, Wernicke–Korsakoff syndrome, anoxia or other trauma. But long-term memories from before the event remain intact.Īnterograde amnesia condition can be temporary or permanent. Hence, they cannot remember things for a long period of time. Patients cannot transfer new information from short term store to long term store. Side by Side Comparison – Anterograde vs Retrograde Amnesia in Tabular FormĪnterograde amnesia is the inability to form new memories due to brain damage. Similarities Between Anterograde and Retrograde Amnesiaĥ.
Those suffering from anterograde amnesia cannot create new memories, while those suffering from retrograde amnesia cannot recall facts or past experiences. Anterograde amnesia and retrograde amnesia are the two main types of amnesia. There are three major types of causes as head trauma, traumatic events and physical deficiencies. Amnesia is associated mainly with the damage to the medial temporal lobe. The memory can be completely lost or partially lost. It can also happen due to various sedatives and hypnotic drugs. The key difference between anterograde and retrograde amnesia is that anterograde amnesia refers to the inability to create new memories while retrograde amnesia refers to the inability to recall past memories.Īmnesia is a form of memory loss caused by brain damage or diseases.
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