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Amnesia is a deficit in memory caused by brain damage or brain diseases, [1] but it can also be temporarily caused by the use of various sedative and hypnotic drugs. The memory can be either wholly or partially lost due to the extent of damage that is caused. [2] There are two main types of amnesia:
Unethical amnesia is the tendency to forget the dishonest actions we commit, or to remember them in a blurred or very limited way. While we remember the immoral actions of others with precision, we tend to remember our own similar actions less easily. [ 1 ]
Cryptomnesia occurs when a forgotten memory returns without its being recognized as such by the subject, who believes it is something new and original. It is a memory bias whereby a person may falsely recall generating a thought, an idea, a tune, a name, or a joke; [1] they are not deliberately engaging in plagiarism, but are experiencing a memory as if it were a new inspiration.
Amnesia (1986 video game), a 1986 text-adventure computer game written by science fiction author Thomas M. Disch; Amnesia (2011 video game), a 2011 Japanese visual novel for the PlayStation Portable
Amnesia is an abnormal mental state in which memory and learning are affected out of all proportion to other cognitive functions in an otherwise alert and responsive patient. [5] There are two forms of amnesia: Anterograde amnesia and retrograde amnesia , that show hippocampal or medial temporal lobe damage.
Semantic amnesia progressively evolves into dementia. Semantic dementia , a degenerative disorder, causes a progressive loss of semantic and conceptual knowledge. The region of the brain associated with semantic dementia is the left anterior temporal lobe [ 7 ] Patients experience difficulties in verbal identification of stimuli and have poor ...
Dissociative amnesia or psychogenic amnesia is a dissociative disorder "characterized by retrospectively reported memory gaps. These gaps involve an inability to recall personal information, usually of a traumatic or stressful nature."
Drug-induced amnesia is amnesia caused by drugs. Amnesia may be therapeutic for medical treatment or for medical procedures, or it may be a side-effect of a drug, such as alcohol, or certain medications for psychiatric disorders, such as benzodiazepines. [1] It is seen also with slow acting parenteral general anaesthetics. [citation needed]