In anterograde amnesia, new events contained in the immediate memory are not transferred to the permanent as 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 brief period following the event. The complement of this is retrograde amnesia, where someone will have impaired recall of events that occurred prior to the onset of the amnesia. The terms are used to categorise patterns of symptoms, rather than to indicate a particular cause or etiology. Both categories of amnesia can occur together in the same patient, and commonly result from drug effects or damage to the brain regions most closely associated with episodic/declarative memory: the medial temporal lobes and especially the hippocampus.
An example of mixed retrograde and anterograde amnesia may be a motorcyclist unable to recall driving his motorbike prior to his head injury (retrograde amnesia), nor can he recall the hospital ward where he is told he had conversations with family over the next two days (anterograde amnesia).
Traumatic amnesia is generally due to a head injury (fall, knock on the head). Traumatic amnesia is often transient, but may be permanent of either anterograde, retrograde or mixed type. The extent of the period covered by the amnesia is related to the degree of injury and may give an indication of the prognosis for recovery of other functions. Mild trauma, such as a car accident that could result in no more than mild whiplash, might cause the occupant of a car to have no memory of the moments just before the accident due to a brief interruption in the short/long-term memory transfer mechanism.
Long-term alcoholism or malnutrition can cause a type of memory loss known as Korsakoff's syndrome. This is caused by brain damage due to a Vitamin B1 deficiency and will be progressive if alcohol intake and nutrition pattern are not modified. Other neurological problems are likely to be present in combination with this type of Amnesia. Korsakoff's syndrome is also known to be connected with confabulation.
Short-term memory loss is a common symptom of Alzheimer's disease and other forms of dementia.
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. This can include:
Dissociative amnesia is used to refer to inability to recall information, usually about stressful or traumatic events in persons' lives, such as a violent attack or rape. The memory is stored in long term memory, but access to it is impaired because of psychological defense mechanisms. Persons retain the capacity to learn new information and there may be some later partial or complete recovery of memory. This contrasts with e.g. anterograde amnesia caused by amnestics such as benzodiazepines or alcohol, where an experience was prevented from being transferred from temporary to permanent memory storage: it will never be recovered, because it was never stored in the first instance.
Fugue state is also known as dissociative fugue. It is caused by psychological trauma and is usually temporary. The Merck Manual defines it as "one or more episodes of amnesia in which the inability to recall some or all of one's past and either the loss of one's identity or the formation of a new identity occur with sudden, unexpected, purposeful travel away from home" [1]. While popular in fiction, it is extremely rare.
Posthypnotic amnesia is where events during hypnosis are forgotten, or where past memories are unable to be recalled.
Lacunar amnesia is the loss of memory about one specific event.
Childhood amnesia (also known as Infantile amnesia) is the common inability to remember events from one's own childhood. Whilst Sigmund Freud attributed this to sexual repression, others have theorised that this may be due to language development or immature parts of the brain. This is often exploited by the use of false memories in child abuse cases.
Global Amnesia is total memory loss. This may be a defence mechanism which occurs after a traumatic event. Post-traumatic stress disorder can also involve the spontaneous, vivid retrieval of unwanted traumatic memories.
Source amnesia is a memory disorder in which someone can recall certain information, but they do not know where or how they obtained it.
Memory distrust syndrome is a term invented by the psychologist Gisli Gudjonsson to describe a situation where someone is unable to trust their own memory.
Excessive short-term alcohol consumption can cause a blackout phenomenon, with the amnesia being of the anterograde type.
These are the different types of amnesia. Induced amnesia occurs with medications and for only the event while they are under the effects of the medications. Like if you had a broken arm and I wanted to set the bones. I could give a medication to put you to sleep and when you woke you would remember everthing like before, except you would not recall me twisting your arm to set the bones right.
To try an induce other types of amnesia are dangerous and i suggest you do not try them.
2007-03-08 10:17:47
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answer #1
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answered by Gary S 4
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Jas Ros you get a heads up from me. I have to say that Some people who have remarked to this seriously have no idea the horrors a person can go thru. And good for them. Meanwhile there are children that have been given by hospitals to seriously dangerous parents that have tortured, sold out for sexual favors and all sorts of Hidious things that NOBODY should have ever had to endure. Without ability to erase those times in life commonly from birth to when ever people take the time to save them. are detached from understanding. I do have a brood understanding of the believing the what seems unfathomable. I know children 5 yrs old that have been raped tortured left to starve and eat their own crap litterally and if you think that is a blessing to society. Wait til your children get involved with such abused people. They have no hope. They can't talk about because they know no different. So for you all who can't wrap your head around the reality. Wake the Hell up. Talk about detached.
2014-12-06 14:17:56
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answer #2
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answered by Denise 1
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Oh Kerry. I'm so sorry you've been through something that was so bad you want to erase it from your memory. There are things I wish I could erase too.
Unfortunately it's not possible. The only way you can make these memories more bearable is to face them head on....which can be extremely painful. You see if you don't, they will fester away in your head and may cause mental health problems later on. Honestly.
I really do think you should go to see your doctor and ask to be referred for some counselling. This is a 'safe' way of facing things with someone very experienced in handling these situations. It can make you feel worse at first...like opening a can of worms that you don't want to see. But then as the counselling goes on...you begin to be less traumatized by it...you really do.
I know this because I didn't face some big issues for many years...had a breakdown and discovered that I've always just wanted to wipe away bad things and make them gone....but you see, they were still in my head...I just didn't want them to be.
I have been down the road that I have suggested for you. I can now live with what has happened and I believe I can face up to things better now.
I hope this helps, best wishes
2007-03-08 10:10:06
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answer #3
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answered by Anonymous
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Retrograde amnesia is really not possible, especially going that far back. We can produce anterograde amnesia with drugs like midazolam, and maybe a few minutes of retrograde amnesia, but not to the degree you are hoping for.
Head injury is really not a viable option. Instead of losing your memory, you might lose something else, like the ability to speak or control your bladder.
I'd suggest counseling.
Good luck to you.
2007-03-08 10:07:54
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answer #4
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answered by Pangolin 7
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Kerry, don't get discouraged by what everyone is saying. I've been told the same thing again and again, but I still beleive that someday it can happen.
I'm a college student majoring in Biochemistry. I plan on doing research and development pertaining to retrograde amnesia. There are others like you.
2007-03-10 17:04:04
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answer #5
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answered by Jásn Rös 1
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You have got to be kidding. People end up in the hospital with amnesia. It is a serious thing. You apparently have absolutely no medical training. You want someone to give you something that might ruin a persons life,,,,NO WAY
From the sounds of it you had an affair and want someone to forget. If you are goung to play------you have to pay.
2007-03-08 10:10:31
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answer #6
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answered by ttpawpaw 7
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I don't even want to know why you'd consider such an option. I can only guess that you've been subpoena'd to testify and you'd rather have a legitimate reason to skip it as opposed to committing perjury.
Why don't you volunteer at your local B.I.G. (Brain Injury Group) and see what some people have to live with from day to day before you decide to inflict brain damage upon yourself.
2007-03-08 10:09:22
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answer #7
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answered by ? 6
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You can't bring on amnesia at will,it is usually caused by a head injury.Even if you could you wouldnt remember anything anyway
2007-03-08 10:06:18
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answer #8
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answered by tuppenybitz 7
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