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Synchronization of intrinsic 0.1 ‐Hz blood‐oxygen‐level‐dependent oscillations in amygdala and prefrontal cortex in subjects with increased state anxiety

In this study, we report on two different approaches: first, on computing the phase‐locking value in the frequency band 0.07–0.13 Hz between heart beat‐to‐beat interval (RRI) and BOLD oscillations and second, between multiple BOLD oscillations (functional connectivity) in four resting states in 23 scanner‐naïve, anxious healthy subjects. The first method revealed that vascular 0.1‐Hz BOLD oscillations preceded those in RRI signals by 1.7 ± 0.6 s and neural BOLD oscillations lagged RRI oscillations by 0.8 ± 0.5 s. Together, vascular BOLD oscillations preceded neural BOLD oscillations by ~90° or ~2.5 s. To verify this discrimination, connectivity patterns of neural and vascular 0.1‐Hz BOLD oscillations were compared in 26 regions involved in processing of emotions. Neural BOLD oscillations revealed significant phase‐coupling between amygdala and medial frontal cortex, while vascular BOLD oscillations showed highly significant phase‐coupling between amygdala and multiple regions in the supply areas of the anterior and medial cerebral arteries. This suggests that not only slow neural and vascular BOLD oscillations can be dissociated but also that two strategies may exist to optimize regulation of anxiety, that is increased functional connectivity between amygdala and medial frontal cortex, and increased cerebral blood flow in amygdala and related structures. Slow spontaneous BOLD oscillations at...
Source: European Journal of Neuroscience - Category: Neuroscience Authors: Tags: Research Report Source Type: research

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Publication date: December 2018 Source:Current Opinion in Behavioral Sciences, Volume 24 Author(s): Neil McNaughton, Philip J Corr Risk assessment (RA) behaviour is unusual in the context of survival circuits. An external object elicits eating, mating or fleeing; but conflict between internal approach and withdrawal tendencies elicits RA-specific behaviour that scans the environment for new information to bring closure. Recently rodent and human threat responses have been compared using ‘predators’ that can be real (e.g. a tarantula), robot, virtual, or symbolic (with the last three rendered predatory by the u...
Source: Current Opinion in Behavioral Sciences - Category: Psychiatry & Psychology Source Type: research
When a doctor in your hospital system kills himself, the entire medical staff receives a mass email informing everyone of “Dr. So-and-So’s sudden unexpected death”. Thoughts and prayers for his family and loved ones. Perhaps a link to your Employee Assistance Program is provided, for those who may need counseling or grief assistance.  This is followed later that day with another email detailing the schedule for the final arrangements. Calling hours. Funeral. Directions to the church.Not everyone will have known the physician. So most scan the email and then go about thei...
Source: Buckeye Surgeon - Category: Surgery Authors: Source Type: blogs
This study examined the prospective judgment of interval durations during a mindfulness meditation exercise in comparison with two control exercises involving different degrees of attentional demands and participants who either had or had not been trained to practice mindfulness exercises. The results showed that the interval durations (going from 15 to 60  s) were systematically judged shorter with the different mindfulness exercises (breathing, body scan) than with the control exercises. This underestimation of time was accompanied by the awareness that time seems to pass faster and by a decrease in the level of anx...
Source: Mindfulness - Category: Psychiatry & Psychology Source Type: research
Conclusion Both SLE and SSc patients with longstanding disease had significant reduction in all stages of TDI that maintained stable over a 2-year period. Olfactory dysfunction was associated with age, inflammation and hippocampi and amygdalae volumes. In SLE, additional association with anti-P, anxiety and depression symptoms was observed.
Source: Autoimmunity Reviews - Category: Allergy & Immunology Source Type: research
Publication date: 15 March 2018 Source:Neuroscience, Volume 374 Author(s): Akira Toyomura, Tetsunoshin Fujii, Koichi Yokosawa, Shinya Kuriki Affective states, such as anticipatory anxiety, critically influence speech communication behavior in adults who stutter. However, there is currently little evidence regarding the involvement of the limbic system in speech disfluency during interpersonal communication. We designed this neuroimaging study and experimental procedure to sample neural activity during interpersonal communication between human participants, and to investigate the relationship between the amygdala activity ...
Source: Neuroscience - Category: Neuroscience Source Type: research
Conclusion offered by NHS Choices) This study showed some promising initial findings for a new way of managing auditory hallucinations in people with schizophrenia. It may be possible for people to be able to learn how to better control and cope with the sounds they hear by using a process of computer feedback. But this was only a pilot study and wasn’t designed to fully evaluate the effectiveness of the treatment. To do this would require: A much larger number of participants to see whether the effects could be consistently detected and not down to chance. A control group. It may be helpful to compare the results w...
Source: SharpBrains - Category: Neuroscience Authors: Tags: Cognitive Neuroscience Health & Wellness Technology auditory auditory hallucinations Brain-Training fMRI fMRI neurofeedback literacy neurocognitive neuroimaging NHS NHS Choices schizophrenia video-game Source Type: blogs
ConclusionThere is a need for more information about disruptive long‐lasting consequences, such as travel anxiety, and available treatments. Initially, health‐promoting connectedness can be facilitated by treating survivors as a group of people who belong together, from the day of the crash and throughout the recovery process.
Source: Scandinavian Journal of Caring Sciences - Category: Nursing Authors: Tags: Empirical Studies Source Type: research
Superman, Spiderman, the Flash, the Avengers, Green Arrow, Catwoman. Idolized superheroes are able to fly, jump from one roof to another beating up the bad guys. Although they all have their unique characteristics and superpowers, one thing is common. They all use their abilities to the fullest. Digital health offers you the same. You can become a real superhero if you proactively harness the power of technology for your health. Technology has the potential to transform how we think about our health The current medical system in most countries works as a reactive setting. The patient goes to the doctor with existing sympt...
Source: The Medical Futurist - Category: Information Technology Authors: Tags: Cyborgization Future of Medicine Health Sensors & Trackers artificial intelligence comics digital digital health Healthcare Innovation marvel marvel universe superhero superpower technology Source Type: blogs
ConclusionsProspective studies using [11C]harmine are possible given its test-retest repeatability when binding is quantified using arterial blood. Results with SIME of input function show potential for simplifying data acquisition by replacing arterial catheterization with one arterial blood sample at 20  min post-injection. Estimation of [11C]harmine binding potentials remains a challenge that warrants further investigation.
Source: Molecular Imaging and Biology - Category: Molecular Biology Source Type: research
You gaze down through the open window at the sparkling Ionia sea resplendent in the late summer sun. Your taxi weaves itself dexterously down the narrow mountain road from Vrachionas, the highest point on the Greek island of Zakynthos. The sun twinkles and a hundred shades of azure bounce back from the gently lapping waves. High above a Cory’s Shearwater banks and weaves barely beating it’s long brown wings as it scans the turquoise waters for an afternoon snack. It would gladly feast on an octopus like the one you had eaten the night before at the quiet beachfront taverna. But it probably wouldn’t care ...
Source: A Daring Adventure - Category: Psychiatry & Psychology Authors: Tags: Life Coaching Stress Management cause of stress Source Type: blogs
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