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Topic: Anterograde amnesia


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In the News (Sun 19 May 13)

  
  Anterograde amnesia - Wikipedia, the free encyclopedia
Anterograde amnesia is a form of amnesia, or memory loss, where new events are not transferred to long-term memory.
Damage to the hippocampus, fornix, or mammillary bodies can result in anterograde amnesia, which contributes further evidence to the theory that these are the structures primarily responsible for the process of laying down long-term memories.
The most famous case of anterograde amnesia is that of HM or Henry M., the man whose lesions accidentally started the inquiry into the neurobiology of learning and memory.
en.wikipedia.org /wiki/Anterograde_amnesia   (1076 words)

  
 Amnesia - Wikipedia, the free encyclopedia
In anterograde amnesia, new events are not transferred to long-term memory, so the sufferer will not be able to remember anything that occurs after the onset of this type of amnesia for more than a few moments.
Traumatic amnesia is often transient; the duration of the amnesia is related to the degree of injury and may give an indication of the prognosis for recovery of other functions.
Psychogenic amnesia results from a psychological cause as opposed to direct damage to the brain caused by head injury, physical trauma or disease, which is known as organic amnesia.
en.wikipedia.org /wiki/Amnesia   (748 words)

  
 Memory Loss & the Brain
Anterograde amnesia is a selective memory deficit, resulting from brain injury, in which the individual is severely impaired in learning new information.
In practice, this means that an individual with amnesia may have good memory for childhood and for the years before the injury, but may remember little or nothing from the years since.
Anterograde amnesia can also occur following damage to the basal forebrain, a group of structures which produce acetylcholine, a chemical which helps cells in the brain store new information during learning.
www.memorylossonline.com /glossary/anterogradeamnesia.html   (536 words)

  
 Anterograde amnesia
Anterograde amnesia is a form of amnesia where new events are not transferred to long-term memory, so the sufferer will not be able to remember anything that occurs after the onset of this type of amnesia for more than a few moments.
Anterograde amnesia is a deficit in learning subsequent to the onset of the disorder.
Amnesia is usually caused either by physical injury to the brain or by the ingestion of a toxic substance which affects the brain.
neurology.health-cares.net /anterograde-amnesia.php   (579 words)

  
 Amnesia:Organic and Psychogenic
Anterograde amnesia (AA) refers to impairment in learning new material; it is commonly used synonymously with PTA, although, in traumatic cases, such impairment may persist long after the termination of PTA.
In studies of anterograde amnesia, they show a disproportionate difficulty in recalling the temporal sequence of events, the place where something was learned (spatial context), and the source of information even when the information itself has been recalled.
In these studies, amnesia was found rarely or not at all in non-violent crime: this may have reflected the locations of the studies, but there is evidence that in violent crime recall by victims and eyewitnesses is also impaired.
sabryabdelfattah.tripod.com /docs/AMNESIA.htm   (8039 words)

  
 Aggleton, John P. & Brown, Malcolm W. (1999) Episodic memory, amnesia, and the hippocampal-anterior thalamic axis.
The distinction between temporal lobe and diencephalic amnesia is of limited value because a common feature of anterograde amnesia is damage to part of an "extended hippocampal system" comprising the hippocampus, the fornix, the mamillary bodies and the anterior thalamic nuclei.
Anterograde amnesia is typified by a failure to acquire or retain `episodic' information (Tulving 1983) that occurred after the onset of brain injury.
Although it is often assumed that temporal lobe amnesia is principally a consequence of damage to the hippocampus, it remains to be confirmed whether such damage is sufficient to induce amnesia.
bbsonline.cup.cam.ac.uk /Preprints/OldArchive/bbs.aggleton.html   (19853 words)

  
 Memory Loss & the Brain
This does happen, but it's much more common for people to develop anterograde amnesia from a stroke, viral encephalitis, chronic epilepsy, or the interruption of the brain's oxygen supply due to near-drowning or strangulation (hypoxia or anoxia).
People with anterograde amnesia often cannot remember the trauma that caused their memory loss as well as some memories of events just before the trauma.
Scientists theorize that this loss of past memories, or retrograde amnesia, occurs because harm to the hippocampus has disrupted the process of consolidation, by which recent memories are gradually transformed into enduring long-term memories.
www.memorylossonline.com /spring2002/memlossatmovies.htm   (1404 words)

  
 Anterograde amnesia: Facts and details from Encyclopedia Topic   (Site not responding. Last check: 2007-09-19)
Amnesia is a condition in which memory is disturbed....
A sufferer of anterograde amnesia is one of the patients profiled by Oliver Sacks[Follow this hyperlink for a summary of this subject] in his book The Man Who Mistook His Wife for a Hat The Man Who Mistook His Wife for a Hat quick summary:
Retrograde amnesia is a form of amnesia where someone will be unable to recall events that occurred before the onset of amnesia....
www.absoluteastronomy.com /encyclopedia/a/an/anterograde_amnesia.htm   (1079 words)

  
 MedFriendly.com: Amnesia   (Site not responding. Last check: 2007-09-19)
Anterograde amnesia is a loss or disturbance of memory for events that occur after a trauma, disease, or traumatic emotional event that caused the memory disturbance.
Retrograde amnesia is a loss or disturbance of memory for events that occurred before a trauma, disease, or a traumatic emotional event that caused the memory disturbance.
Posttraumatic amnesia is an inability to form consistent day-to-day memories due to several possible causes: (1) a trauma to the brain that is related to a head injury, (2) excessive alcohol use, or (3) stopping the use of alcohol or other drugs that affect mood, behavior, or thinking processes.
www.medfriendly.com /amnesia.html   (236 words)

  
 [No title]   (Site not responding. Last check: 2007-09-19)
Anterograde amnesia results from a malfunction in memory consolidation.
Leonard fits the profile for amnesia by blunt head trauma and his condition is consistent with studies done on duration of amnesia.
Anterograde amnesia results from a disturbance in the ability to consolidate memories, but short-term memory remains intact.
www.unc.edu /courses/2003spring/engl/012/037/33rolandW.doc   (1262 words)

  
 Team projects on www for Neuropsychology
Amnesia by John Lenahan In cognitive neuropsychology, amnesia is looked at to attempt to explain memory disorders in the terms of impairments compared to the normal processes of memory.
The opposite of this is retrograde amnesia, a type of organic amnesia such as a head injury, which is the inability to recall events occurring before any brain damage happened.
A more famous case of anterograde amnesia, involves a patient named HM, who in his mid-20' received a bilateral resection of the medial portions of the temporal lobes, and had partial removal of the hippocampus and amygdala on each side (Scoville and Milner, 1957).
www.humboldt.edu /~morgan/amnesia2.htm   (2053 words)

  
 Howstuffworks "What exactly is amnesia?"
Anterograde amnesia - Inability to remember ongoing events after the incidence of trauma or the onset of the disease that caused the amnesia
If someone is suffering from retrograde amnesia, he or she cannot recall memories that occurred before the onset of amnesia.
If someone has anterograde amnesia, he or she cannot remember incidents that happen after the onset of amnesia.
science.howstuffworks.com /question672.htm   (702 words)

  
 THE BRAIN FROM TOP TO BOTTOM   (Site not responding. Last check: 2007-09-19)
Amnesias can be divided into two categories: neurological amnesias (originating from organic lesions) and psychogenic amnesias (arising from psychic traumas).
Anterograde amnesia, also known as fixation amnesia, is the inability to remember or recognize new information or new events that occurred after the amnesia’s onset.
Retrograde amnesia, also known as evocation amnesia, is the inability to remember or recognize information or events that occurred prior to onset.
www.thebrain.mcgill.ca /flash/a/a_07/a_07_p/a_07_p_oub/a_07_p_oub.htm   (1674 words)

  
 Amnesia: Health Topics: UI Health Care
Amnesia refers to loss of memory and is often the result of a traumatic event.
Amnesia should always be considered serious enough to call for a full evaluation by a healthcare provider.
This is amnesia caused by a psychological trauma.
www.uihealthcare.com /topics/mentalemotionalhealth/ment3141.html   (373 words)

  
 Amnesia | AHealthyMe.com
Amnesia can be a symptom of several neurodegenerative diseases; however, people whose primary symptom is memory loss (amnesiacs), typically remain lucid and retain their sense of self.
In some ways, this form of amnesia is the opposite of anterograde amnesia: the victim can recall events that occurred after a trauma, but cannot remember previously familiar information or the events preceding the trauma.
This type of amnesia has no consistently identifiable cause, but researchers have suggested that migraines or transient ischemic attacks may be the trigger.
www.ahealthyme.com /topic/topic100586419   (998 words)

  
 The Straight Dope: Can you get amnesia from a blow to the head?
Anterograde amnesia, by contrast, is a failure of the recording mechanism--new information never gets stored away.
In the first case, an artist had a stroke and suffered severe retrograde and anterograde amnesia, forgetting his family, his friends, his work--everything but (brain damage can be so cruel) the faces of famous politicians.
Not all psychogenic amnesiacs are unstable, though--in one recent case, a man without apparent physical or psychological problems suffered a two-day bout of anterograde amnesia after a vivid dream that his son had joined the marines and died in Iraq.
www.straightdope.com /columns/040416.html   (912 words)

  
 Psychology 371
Amnesia is a condition that affects the memory processes of individuals.
Amnesia is a non-unitary syndrome which is classified according to several criterion.
Amnesia is classified into two categories depending on the time window of affected memory based on amnesia onset.
www.cnbc.cmu.edu /~medler/courses/psyco371/lecture10/lecture10.html   (853 words)

  
 Amnesias
Anterograde amnesia is when new memories cannot be stored.
Oliver Sachs, the neurologist, describes the case of Jimmy, a 50 year-old-victim of anterograde amnesia.
The loss of memory was caused by the accident, and is a case of organic amnesia.
peace.saumag.edu /faculty/kardas/courses/GPWeiten/C7Memory/Amnesias.html   (593 words)

  
 MedFriendly.com: Anterograde amnesia   (Site not responding. Last check: 2007-09-19)
For example, after a person suffers brain damage from a head injury, he/she may be unable to remember events that occur after the brain injury, such as being in the hospital.
Compare anterograde amnesia with retrograde amnesia, which is a loss or disturbance of memory for events that occurred before a trauma, disease, or a traumatic emotional event that caused the memory disturbance.
Anterograde amnesia comes from the Latin word "antero" meaning "foremost or front," the Greek word "a" meaning "without," and the Greek word "mnemonic," meaning "memory." Put the words together and you have"without the front (part of) memory," referring to memories after a trauma or disease happened.
www.medfriendly.com /anterogradeamnesia.html   (180 words)

  
 Infantile amnesia
Some say this type of amnesia could be linked to language development or the fact that some areas of the brain linked to memory were not fully mature.
Today, childhood amnesia is seen as a part of human development.
Infantile amnesia is often thought of as a paradox, since it is known that infants' and young children's minds handle a lot of new impressions and are considered adept at learning, and yet it is believed that memories are only created after some fundamental developments of the brain are completed.
neurology.health-cares.net /infantile-amnesia.php   (448 words)

  
 AMNESIA   (Site not responding. Last check: 2007-09-19)
Retrograde amnesia is a loss of memory that occurs before the time of the event.
Anterograde amnesia is a loss of memory that occurs after the time of the event, such as forgetting something that happened after having surgery.
People with this amnesia may forget events around a terrible incident, such as witnessing the violent death of a loved one.
www.metrohealth.org /HI/indexes/MENT3141.htm   (359 words)

  
 What is amnesia?   (Site not responding. Last check: 2007-09-19)
A severe example is anterograde amnesia, a rare condition which can result from brain injury or disease.
For example, if a man developed retrograde amnesia in middle age, he might have excellent memory for his childhood, nearly complete memories of young adulthood, and progressively less memory for the years leading up to his brain injury.
For this reason, scientists and doctors often just use the word "amnesia" to refer to a general condition involving severe anterograde amnesia and some degree of retrograde amnesia.
www.memory.rutgers.edu /memory/html/q2.html   (407 words)

  
 Amnesia   (Site not responding. Last check: 2007-09-19)
Amnesia is a general term that describes memory loss.
Anterograde amnesia means that the person can't learn anything new, while retrograde amnesia means the person forgets events from their past.
Infantile amnesia, or the inability to remember anything at all from the first few months or years of life, is universal.
www.betterhealth.vic.gov.au /bhcv2/bhcarticles.nsf/pages/Amnesia?open   (650 words)

  
 PDPNLP/CRL talk on Nov. 2 - Vic Ferreira: "Syntactic priming in anterograde amnesia: Evidence for implicit ...   (Site not responding. Last check: 2007-09-19)
----------------------------------------------------------------- "Syntactic priming in anterograde amnesia: Evidence for implicit learning" Vic Ferreira Syntactic priming, an effect whereby speakers tend to repeat the syntactic structures of sentences they have recently experienced, has been used to probe how syntax is represented and formulated.
Anterograde amnesics show explicit memory for events or actions at near-chance levels, whereas they show implicit memory for events or actions at near-normal levels.
If syntactic persistence is attributable to implicit learning, then anterograde amnesics should repeat the syntactic structures of sentences they can't explicitly remember.
crl.ucsd.edu /pipermail/pdpnlp/2004/000024.html   (351 words)

  
 Chapter 15
A person with anterograde amnesia can remember events in the past, events that occurred before the brain damage, but cannot retain any information he or she encountered after the brain damage.
Korsakoff's syndrome is a severe form of anterograde amnesia that is usually a result of chronic alcoholism.
Anterograde amnesia can also be caused by bilateral damage to the temporal lobes.
www.macalester.edu /psychology/whathap/diaries/diariesf96/angela/diary_12.html   (1283 words)

  
 Lecture notes of Chapter 1
Anterograde amnesia: loss of memory for events occurring after the amnesia-inducing event, such as, car accident, stroke Ex: the person can not learn his new home address (2).
Severe anterograde amnesia: he can not form long-term memories for events that occurred after his surgery, for example, he had no memory of his new home, new doctor, new friends, new job 3).
Anterograde amnesia (varying degree): difficult to define the date of brain damage 3).
www.humboldt.edu /~sh4/p321notech13.htm   (2041 words)

  
 Neuroscience for Kids - Neuroscience Movies
Amnesia is not so much a disorder as it is a symptom of disease or injury to the brain.
Amnesia is rarely total for all past events; no one actually goes through the rest of his or her life as a "ghost" without an identity or any knowledge of self or family.
Retrograde amnesia involves loss of memory for events prior to the injury; anterograde amnesia is the inability to form new memories.
staff.washington.edu /chudler/moviesa.html   (1200 words)

  
 Episodic memory in transient global amnesia: encoding, storage, or retrieval deficit? -- Eustache et al. 66 (2): 148 -- ...
The principal objective of this prospective study was to analyse the mechanisms of the anterograde amnesia that characterises
Transient global amnesia: implicit/explicit memory dissociation, and PET assessment of brain perfusion and oxygen metabolism in the acute stage.
The dissociation of retrograde and anterograde amnesia in a patient with herpes encephalitis.
jnnp.bmjjournals.com /cgi/content/full/66/2/148   (4116 words)

  
 Anterograde amnesia - Memory Alpha
Anterograde amnesia is a medical condition which prevents the sufferer storing new memories.
In an alternate timeline, Jonathan Archer was affected by anterograde amnesia after being infested with interspatial parasites in 2154.
Consequently, he was unable to discharge his duties as captain of Enterprise, and was forced to resign his commission.
memory-alpha.org /en/wiki/Anterograde_amnesia   (184 words)

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