Researchers Look at the Question: Is PTSD Overdiagnosed?
Researched debated whether posttraumatic stress disorder has been overdiagnosed or underdiagnosed and discussed the respective consequences to public health, society, and individual patients.
PTSD Trauma And Stressor-related
Some Military Vets Experienced Psychological Benefits From COVID-19
Has there been a silver lining during the COVID-19 pandemic? While extensive research has documented the negative psychiatric consequences of the pandemic, no study has examined whether it might be associated with positive psychological growth or posttraumatic growth, until now.
Immigrant Minorities in Canada at Higher Risk for PTSD
This study addressed knowledge gaps about post-traumatic stress disorder in mid-age and older adults, with particular attention to the relationship of PTSD with nutrition and with ethnicity and immigrant status.
Stability and Amplitude of Diurnal Rest-Activity Highly Variable Among Patients With PTSD and Insomnia
The researchers used actigraphy sleep metrics to quantify diurnal rhythms via interdaily stability, intradaily variability, relative amplitude, and sleep regularity.
Ongoing Exposure to Stressors Harms Health
Chronic exposure to stressors leads to an erosion of health, as measured by allostatic load, which is particularly severe among foreign-born Black and Latino individuals.
Activation of Certain Brain Regions Correlated with Subsequent Response to CBT for PTSD
While trauma-focused cognitive-behavioral therapy is an important component of evidence-based treatment for posttraumatic stress disorder, the efficacy of treatment can vary between individuals. It is thought that some of this variability is derived from interindividual differences in the brain’s intrinsic response to trauma-related stimuli and in activity of executive functional regions. The authors of this study sought to characterize these differences using a functional MRI in patients about to undergo CBT for PTSD.
Long-Term Exposure to a Mediterranean Diet Positively Alters Stress Response and Promotes Healthy Aging
There is a need for better understanding of factors that influence stress response as little progress has been made to effectively reduce stress responses. Evidence suggests that diet may be a factor in modifying the effects of stress.
Overactivating the Brain Causes Elevated Arousal and Threat Response
By combining targeted intracerebral microinfusions with cardiovascular and behavioral monitoring in marmosets, we show that overactivation of sgACC/25 reduces vagal tone and heart rate variability, alters cortisol dynamics during stress and heightens reactivity to proximal and distal threat.
Increased Time in Rapid Eye Movement Sleep Following a Traumatic Event May Offset Symptoms of Fear
Given the interactions of sleep with learning and memory, researchers hypothesized that increasing sleep duration following trauma exposure would restore overall function and improve trauma-induced fear-associated memory dysfunction.
Role of Amygdala Inhibitory Neurons in Conditioned Threat Response, Emotional Memories
This study provides evidence that the disruption of protein synthesis in discrete inhibitory neuron subpopulations in the centrolateral amygdala impairs associative memories related to threat and safety, which may contribute to maladaptive behavior in memory disorders such as PTSD.
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