A report on Anterograde amnesia and Retrograde amnesia
This is in contrast to retrograde amnesia, where memories created prior to the event are lost while new memories can still be created.
- Anterograde amnesiaAnterograde amnesia is a similar condition that deals with the inability to form new memories following the onset of an injury or disease.
- Retrograde amnesia6 related topics with Alpha
Hippocampus
4 linksMajor component of the brain of humans and other vertebrates.
Major component of the brain of humans and other vertebrates.
People with extensive, bilateral hippocampal damage may experience anterograde amnesia: the inability to form and retain new memories.
The unexpected outcome of the surgery was severe anterograde and partial retrograde amnesia; Molaison was unable to form new episodic memories after his surgery and could not remember any events that occurred just before his surgery, but he did retain memories of events that occurred many years earlier extending back into his childhood.
Amnesia
3 linksDeficit in memory caused by brain damage or disease, but it can also be caused temporarily by the use of various sedatives and hypnotic drugs.
Deficit in memory caused by brain damage or disease, but it can also be caused temporarily by the use of various sedatives and hypnotic drugs.
There are two main types of amnesia: retrograde amnesia and anterograde amnesia.
Memory consolidation
3 linksCategory of processes that stabilize a memory trace after its initial acquisition.
Category of processes that stabilize a memory trace after its initial acquisition.
Systematic studies of anterograde amnesia started to emerge in the 1960s and 1970s.
Molaison also showed signs of retrograde amnesia spanning a period of about 3 years prior to the surgery suggesting that recently acquired memories of as long as a couple years could remain in the MTL prior to consolidation into other brain areas.
Long-term memory
3 linksStage of the Atkinson–Shiffrin memory model in which informative knowledge is held indefinitely.
Stage of the Atkinson–Shiffrin memory model in which informative knowledge is held indefinitely.
His subsequent total anterograde amnesia and partial retrograde amnesia provided the first evidence for the localization of memory function, and further clarified the differences between declarative and procedural memory.
Henry Molaison
2 linksAmerican who had a bilateral medial temporal lobectomy to surgically resect the anterior two thirds of his hippocampi, parahippocampal cortices, entorhinal cortices, piriform cortices, and amygdalae in an attempt to cure his epilepsy.
American who had a bilateral medial temporal lobectomy to surgically resect the anterior two thirds of his hippocampi, parahippocampal cortices, entorhinal cortices, piriform cortices, and amygdalae in an attempt to cure his epilepsy.
After the surgery, which was partially successful in controlling his seizures, Molaison developed severe anterograde amnesia: although his working memory and procedural memory were intact, he could not commit new events to his explicit memory.
He also had moderate retrograde amnesia, and could not remember most events in the one- to two-year period before surgery, nor some events up to 11 years before, meaning that his amnesia was temporally graded.
Korsakoff syndrome
1 linksDisorder of the central nervous system characterized by amnesia, deficits in explicit memory, and confabulation.
Disorder of the central nervous system characterized by amnesia, deficits in explicit memory, and confabulation.
1) anterograde amnesia, memory loss for events after the onset of the syndrome
2) retrograde amnesia, memory loss extends back for some time before the onset of the syndrome