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A common example in sports concussion is the quarterback who was able to conduct the complicated mental tasks of leading a football team after a concussion, but has no recollection the next day of the part of the game that took place after the injury. Individuals with retrograde amnesia may partially regain memory later, but memories are not ...
In neurology, retrograde amnesia (RA) is the inability to access memories or information from before an injury or disease occurred. [1] RA differs from a similar condition called anterograde amnesia (AA), which is the inability to form new memories following injury or disease onset. [2]
Retrograde amnesia (RA) is a loss of access to events and information of the past after the onset of disease or injury [1]. RA is often temporally graded, consistent with Ribot's Law : more recent memories closer to the traumatic incident are more likely to be forgotten than more remote memories [ 2 ] .
Traumatic brain injury (TBI) often occurs from damage to the brain caused by an outside force, and may lead to cases of amnesia depending on the severity of the injury. [8] Head injury can give rise to either transient or persisting amnesia. Occasionally, post-traumatic amnesia (PTA) may exist without any retrograde amnesia (RA), but this is ...
In 1960, when Patient N.A. was 22 years old, a fencing foil went up his nose and injured his brain. This resulted in severe anterograde amnesia, specifically in his verbal memory, as well as impaired eye movements. His nonverbal memory was less affected, as were most of his mental abilities, indicating no retrograde amnesia. [2]
Because psychogenic amnesia is defined by its lack of physical damage to the brain, [16] treatment by physical methods is difficult. [7] Nonetheless, distinguishing between organic and dissociative memory loss has been described as an essential first-step in effective treatments. [1]
Head trauma is a very broad range as it deals with any kind of injury or active action toward the brain which might cause amnesia. Retrograde and anterograde amnesia is more often seen from events like this, an exact example of a cause of the two would be electroconvulsive therapy, which would cause both briefly for the receiving patient.
When people experience physical trauma, such as a head injury in a car accident, it can result in effects on their memory. The most common form of memory disturbance in cases of severe injuries or perceived physical distress due to a traumatic event is post-traumatic stress disorder, [3] discussed in depth later in the article.