1/3/2024 0 Comments Self induced amnesia![]() ![]() As reported in Nature Communications this month, the researchers found that, compared with being surrounded by think trials, participants accurately recalled the object’s identity about 45% less frequently if the scene was presented shortly before or after the no-think – memory suppression – trials. The researchers wanted to understand if surrounding the bystander pictures with no-think trials reduced later memory for the pictures, creating an “amnesic shadow.” In a final memory test, participants had to recall the object that had appeared in each bystander scene. Each of these pictures presented an object in a location, such as a peacock in a parking lot or a soccer ball on a table, and participants had to imagine how the object came to its location. Researchers have used this think/no-think paradigm extensively in the past to study how suppressing an unwanted memory can make it harder to retrieve the suppressed memory later on.įor the new study, Justin Hulbert (now at Bard College), Richard Henson, and Anderson inserted novel (“bystander”) pictures in between think and no-think trials. In the experiment, after studying word pairs such as “leap-ballet,” participants had to either retrieve (“think” trials) or suppress retrieval (“no-think” trials) of the second word in each pair, given the first word as a reminder. The work, says senior author Michael Anderson of the University of Cambridge, “suggests that the functional state of the hippocampus can be dynamically disrupted by cognitive control, creating ‘virtual lesions’ that impede memory functioning.” The researchers were inspired by the desire to understand the memory impairments individuals commonly report after a trauma. According to a new study, this temporary state of amnesia mimics organic amnesia, disrupting the processes in the hippocampus that lead to long-term memory creation. When we try to forget something unpleasant, whether a bad argument or a traumatic event, we may be unintentionally inducing amnesia of unrelated memories. Quick Tips for Getting Started on Twitter. ![]() Fred Kavli Distinguished Career Contributions Award.Registration Policies, Cancellations & Refunds.CNS at 30: Perspectives on the Roots, Present, and Future of Cognitive Neuroscience.Distinguished Career Contributions Awardee.Annual Meeting Workshop Policy & Application.The use of technology among persons with memory concerns and their caregivers in the United States during the COVID-19 pandemic: Qualitative study. doi:10.1002/gps.4166Īlbers EA, Mikal J, Millenbah A, Finlay J, Jutkowitz E, Mitchell L, Horn B, Gaugler JE. Social support group interventions in people with dementia and mild cognitive impairment: a systematic review of the literature. Effective occupational therapy intervention with adults demonstrating agitation during post-traumatic amnesia. The effects of electroconvulsive therapy on memory of autobiographical and public events. Lisanby SH, Maddox JH, Prudic J, Devanand DP, Sackeim HA. United states of amnesia: rescuing memory loss from diverse conditions. Genetic and Rare Diseases Information Center. Focal retrograde amnesia: voxel-based morphometry findings in a case without MRI lesions. Sehm B, Frisch S, Thöne-Otto A, Horstmann A, Villringer A, Obrig H. Classic and recent advances in understanding amnesia. doi:10.1016/j.neuropsychologia.2013.09.015Īmerican Psychological Association. The nature of anterograde and retrograde memory impairment after damage to the medial temporal lobe. Smith CN, Frascino JC, Hopkins RO, Squire LR. Traumatic brain injury (TBI): Damage to the brain due to stroke, injury, or other causes can lead to memory loss.Seizures: Seizures due to epilepsy or other causes can also damage areas of the brain associated with memory.People with Korsakoff's syndrome experience symptoms of retrograde amnesia caused by decreased hippocampal volume. Nutritional deficiencies: Excessive, chronic alcohol intake can lead to a thiamine (B12) deficiency called Korsakoff's syndrome.Infections: Brain infections such as encephalitis can sometimes cause retrograde amnesia.It may improve with time, but some people experience persistent memory gaps. Electroconvulsive therapy (ECT): ECT is a treatment for depression and other psychiatric conditions that involves inducing a seizure with a brief electrical current.Disease: Progressive conditions such as Alzheimer’s, Huntington’s, and multiple sclerosis may lead to symptoms of retrograde amnesia.Cardiac arrest: A heart attack can lead to a temporary lack of oxygen to the brain, which may lead to retrograde amnesia, other cognitive problems, or brain damage. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |