Symptoms of PTSD and Flashbacks
"Some individuals with PTSD repeatedly "relive" the trauma in the form of nightmares, disturbing memories, experience "flashbacks," or intrusive images of the traumatic event. Regular everyday events may trigger the flashback. The "flashback" may come in the form of images, sounds, smells, or feelings. The person experiencing a flashback may lose touch with reality for brief or longer periods of time (dissociation). The person may experience dissociation that lasts from a few seconds to several hours, or even days, during which the components of the event are relived and the person may believe the traumatic event is happening all over again."
"that 'memories' of the trauma tend to, at least initially, be predominantly experienced as fragments of the sensory components of the e vent: as visual images, olfactory, auditory, or kinesthetic sensations, or intense waves of feelings (which patients usually claim to be representations of elements of the original traumatic event). What is intriguing is that patients consistently claim that their perceptions are exact representations of sensations at the time of the trauma."
"researchers have proved that visual memories are re-created in the brain as mental pictures. Stored images are played, like videotapes, on a screenlike sheet of tissue at the back of the head."
"The study, “The Nature
of Traumatic Memories: A 4-T fMRI Functional Connectivity Analysis,”
led by Ruth Lanius, M.D., Ph.D., Department of Psychiatry, University
of Western Ontario, Canada and an affiliate of the Robart's Research Institute,
found that in people with PTSD, traumatic memories are associated with
regions in the brain's right hemisphere, compared to the left in traumatized
people without the disorder. The right hemisphere influences nonverbal
memory recall, and the left influences a verbal pattern of memory recall.
"Recalling traumatic events
as flashbacks differs from recalling them as ordinary autobiographical
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