Hyperthymesia: excessive (hyper) remembering (thymesia)
It is a syndrome in which an unusual mental state with deep memory or unique neurological condition occurs in which a person memorizes a vast number of life experiences (even the small events) that happened in past , which a normal person is unable to memorize. For eg. A person can remember with exact details (even emotions) what and how each thing happened many years back on any date and time.
Earlier, hyperthymesia was known as highly superior autobiographical memory (HSAM).
WHAT ARE ITS SYMPTOMS?
Generally, there are no special symptoms of hyperthymesia that differs from normal person except deep semantic(events) memory, exceptional episodic(personal) memory & capacity of memorizing, ability to recall minor events, high reasoning capacity etc.
As we discuss CAUSES, there is no general cause resulting this syndrome.
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Only this is revealed that person with hyperthymesia have enlarged TEMPORAL LOBE and CAUDATE NUCLEUS which are important part of the brain plays a major role in regulating process of semantic memory and episodic memory.
Hyperthymesia is positive syndrome as superior memorizing god gifted power,so there is no TREATMENT needed yet. But if person with hyperthymesia have any kind of functional or structural disturbance then treatment should be needed.
There are some TESTs of hyperthymesia :
1) Motor function test: It is performed to check neuronal activity of brain during movement, speech & memorizing. Test includes visual motor & executive function test, lateralisation, pattern recognization test, language ability test.
2) Radiographic Scanning: It includes Magnetic Resonance Imaging (MRI) test, Computerized tomography (CT-Scan) test.
3) Electrophysiological test: Electroencephalograph (EEG) test to analyze the pattern of cerebral waves and its frequency.
Some people think that Eidetic is a kind of hyperthymesia…But its not. (Eidetic-relating to or denoting mental images having unusual vividness and detail, as if actually visible)
Hyperthymesia person have deep autobiographical memory of events that happened previously while Eidetic memory is characterized by a state in which person have vast and strong photographic memory (face/ scene recognition).
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Its tough to believe that only 25 person all over world are possessing hyperthymesia and among them one is Marilu Henner is a famous radio host,producer, actress, author eho owns great memory to remember everything happened in past.
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