anterograde amnesia definition
Retrograde amnesia usually follows damage to areas of the brain other than the hippocampus (the part of the brain involved in encoding new memories), because already exisiting long-term memories are stored in the neurons and synapses of various different brain regions. Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content. Link to this page: <a href=http://www.thefreedictionary.com/retrograde+amnesia>retrograde amnesia</a>. Facebook. Retrograde amnesia: Amnesia in which the lack of memory relates to events that occurred before a traumatic event. Retrograde amnesia is in contrast to antegrade amnesia in which the lack of memory relates to events that occurred after a traumatic event. Search MedTerms: Anterograde Amnesia Definition. Anterograde Amnesia is a rare condition characterized by a typical pattern of memory loss. It is generally caused by some traumatic brain injury or a mental shock. The disorder makes it impossible for a patient to create fresh memories after the incident that leads to the amnesia. This means they are unable to remember incidences from recent past. Retrograde amnesia: Amnesia in which the lack of memory relates to events that occurred before a traumatic event. Retrograde amnesia is in contrast to antegrade amnesia in which the lack of memory relates to events that occurred after a traumatic event. Last Editorial Review: 5/13/2016. Back to MedTerms online medical dictionary A-Z List. Definition of Antegrade amnesia. Antegrade amnesia: Amnesia in which the loss of memory relates to events that occur after a traumatic event. There is inability to recall new information. Old information can be recalled. Antegrade amnesia may follow brain trauma. Also called antegrade amnesia. retrograde amnesia - loss of memory for events immediately preceding a trauma. amnesia, memory loss, blackout - partial or total loss of memory; he has a total blackout for events of the evening. The last two diagnoses were thought to explain his occasional amnesia and vehement denial of having stabbed himself; however, posttraumatic retrograde amnesia or amnesia related to his other diagnoses seem to be more likely explanations. Retrograde amnesia is a form of amnesia where someone is unable to recall events that occurred before the development of the amnesia, even though they may be able to encode and memorize new things that occur after the onset. A preliminary study was carried on mice who suffered from amnesia, and it was found that patients suffering from retrograde amnesia -- where the person losses memory access, actually don't lose their memory but it will become inaccessible for recall.
It is a rare condition characterized by a typical pattern of memory loss.