The present randomised placebo controlled trial explored the extent to which osteopathic manipulative treatment (OMT) affects brain activity, particularly the insula, during both an "interoceptive awareness" and "exteroceptive awareness" task in a sample of 32 right-handed adults with chronic Low Back Pain (CLBP) randomly assigned to either the OMT or sham group. Patients received 4 weekly sessions and fMRI was performed at enrolment (T0), immediately after the first session (T1) and at 1 month (T2). The results revealed that the OMT produced a distinct and specific reduction in BOLD response in specific brain areas related to interoception, i.e., bilateral insula, ACC, left striatum and rMFG. The observed trend across the three time points appears uncharacteristic. At T1, a marginal increase of the BOLD response was observed in all the above-mentioned areas except the rMFG, which showed a decrease in BOLD response. At T2, the response was the opposite: areas related to interoception (bilateral insula and ACC) as well as the rMFG and left striatum demonstrated significant decreased in BOLD response. The findings of this study provide an insight into the effects of manual therapies on brain activity and have implications for future research in the field.
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http://dx.doi.org/10.1038/s41598-020-60253-6 | DOI Listing |
Alcohol Clin Exp Res (Hoboken)
December 2024
Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada.
Background: Adolescent alcohol use is the norm, but only some develop a substance use disorder. The increased risk might reflect heightened mesocorticolimbic responses to reward-related cues but results published to date have been inconsistent.
Methods: Young social drinkers (age 18.
Personal Disord
December 2024
School of Psychology, University of Wollongong.
Individuals with borderline personality disorder (BPD) often hold pervasive and negative self-views and experience feelings of low connectedness toward others despite effective treatment. This study aimed to identify neural and affective mechanisms of identity disturbance in BPD that contribute to difficulties in relating to others. Participants diagnosed with BPD ( = 34) and nonclinical controls (NCC; = 35) completed a within-subject social feedback task inside a magnetic resonance imaging scanner.
View Article and Find Full Text PDFHum Brain Mapp
December 2024
Department of Neuroscience, High Resolution Brain Imaging Lab, Baylor College of Medicine, Houston, Texas, USA.
In functional magnetic resonance imaging, the hemodynamic response function (HRF) is a stereotypical response to local changes in cerebral hemodynamics and oxygen metabolism due to briefly (< 4 s) evoked neural activity. Accordingly, the HRF is often used as an impulse response with the assumption of linearity in data analysis. In cognitive aging studies, it has been very common to interpret differences in brain activation as age-related changes in neural activity.
View Article and Find Full Text PDFFront Neurosci
November 2024
Center for Translational Neuroimaging, Northeastern University, Boston, MA, United States.
The present studies were undertaken to understand the effects of the commonly used nutraceutical PEA on brain function and lipid chemistry. These studies using MRI and broad-scale lipidomics are without precedent in animal or human research. During the MRI scanning session awake rats were given one of three doses of PEA (3, 10, or 30 mg/kg) or vehicle and imaged for changes in BOLD signal and functional connectivity.
View Article and Find Full Text PDFClin Neurophysiol
December 2024
Montreal Neurological Institute and Hospital, 3801 Rue University, Montreal, QC H3A2B4, Canada.
Objective: To examine the blood oxygen level-dependent (BOLD) responses in the default mode network (DMN) and subcortical regions in relation to epileptic events in scalp EEG and intracranial EEG (iEEG).
Methods: We retrospectively compared BOLD responses in the DMN and subcortical regions to interictal epileptiform discharge (IED) characteristics of the scalp and iEEG in consecutive patients with focal epilepsy. All voxels were used as the denominator to assess the positive and negative BOLD ratios in each region, and the percentage of voxels with significant activation or deactivation was assessed.
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