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    PTSD tagged posts

    Neurobiologists Uncover how Stress turns into Fear in the Brain in Conditions such as PTSD

    March 18, 2024, Categories  Biology/Biotechnology, Health/Medical

    Our nervous systems are naturally wired to sense fear. Whether prompted by the eerie noises we hear alone in the dark or the approaching growl of a threatening animal, our fear response is a survival mechanism that tells us to remain alert and avoid dangerous situations.Read More

    Brain Imaging predicts PTSD after brain injury

    December 30, 2020, Categories  Biology/Biotechnology, Health/Medical

    This shows the outline of a brain in a woman's head
    Together, the findings suggest that a “brain reserve,” or higher cortical volumes, may provide some resilience against PTSD. Image is in the public domain

    Brain volume measurement may provide early biomarker. Posttraumatic stress disorder (PTSD) is a complex psychiatric disorder brought on by physical and/or psychological trauma. How its symptoms, including anxiety, depression and cognitive disturbances arise remains incompletely understood and unpredictable. Treatments and outcomes could potentially be improved if doctors could better predict who would develop PTSD. Now, researchers using magnetic resonance imaging (MRI) have found potential brain biomarkers of PTSD in people with traumatic brain injury (TBI).

    The study appears in Biological Psychiatry: Cognitive Neuroscience a...

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    How to Enhance or Suppress Memories

    May 24, 2019, Categories  Biology/Biotechnology, Health/Medical

    This is what a bad memory looks like in a mouse brain. The cells glowing green indicate that they are being activated in storing a fear memory. Credit: The Ramirez Group, Boston University

    Stimulating different parts of the brain can dial up or down a specific memory’s emotional oomph, study shows. What if scientists could manipulate your brain so that a traumatic memory lost its emotional power over your psyche? Steve Ramirez, a Boston University neuroscientist fascinated by memory, believes that a small structure in the brain could hold the keys to future therapeutic techniques for treating depression, anxiety, and PTSD, someday allowing clinicians to enhance positive memories or suppress negative ones.

    Inside our brains, a cashew-shaped structure called the hippocampus stores t...

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    Study Suggests Memories that Trigger anxiety, PTSD could be ‘Erased’ without affecting normal memory of past events

    June 22, 2017, Categories  Biology/Biotechnology, Health/Medical

    Select memories can be erased, leaving others intact

    Two Aplysia sensory neurons with synaptic contacts on the same motor neuron in culture after isolation from the nervous system of Aplysia. The motor neuron has been injected with a fluorescent molecule that blocks the activity of a specific Protein Kinase M molecule. Credit: Schacher Lab/Columbia University Medical Center

    Different types of memories stored in the same neuron of the marine snail Aplysia can be selectively erased, according to a new study by researchers at Columbia University Medical Center (CUMC) and McGill University. The findings suggest that it may be possible to develop drugs to delete memories that trigger anxiety and post-traumatic stress disorder (PTSD) without affecting other important memories of past events.
    During emotional or traumatic events, multiple memories ...

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