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Magistrate judges are “nothing less than indispensable” to the modern judicial system. While they are not Article III judges, they perform duties that Article III judges would otherwise perform, including presiding over civil jury trials, conducting misdemeanor trials, and conducting voir dire and presiding over jury selection in felony trials. These powers may be delegated to magistrate judges under the Federal Magistrate Act of 1979 (FMA 1979) and its subsequent amendments. In addition to specifically enumerated powers, the FMA provides that “magistrate judge[s] may be assigned such additional duties as are not inconsistent with the Constitution and laws of the United States.”

Increasing evidence suggests that a high-velocity, low-amplitude (HVLA) thrust directed at a dysfunctional vertebral segment in people with subclinical spinal pain alters various neurophysiological measures, including somatosensory evoked potentials (SEPs). We hypothesized that an HVLA thrust applied to a clinician chosen vertebral segment based on clinical indicators of vertebral dysfunction, in short, segment considered as “relevant” would significantly reduce the N30 amplitude compared to an HVLA thrust applied to a predetermined vertebral segment not based on clinical indicators of vertebral dysfunction or segment considered as “non-relevant”. In this double-blinded, active-controlled, parallel-design study, 96 adults with recurrent mild neck pain, ache, or stiffness were randomly allocated to receiving a single thrust directed at either a segment considered as “relevant” or a segment considered as “non-relevant\" in their upper cervical spine. SEPs of median nerve stimulation were recorded before and immediately after a single HVLA application delivered using an adjusting instrument (Activator). A linear mixed model was used to assess changes in the N30 amplitude. A significant interaction between the site of thrust delivery and session was found (F 1,840  = 9.89, p  < 0.002). Pairwise comparisons showed a significant immediate decrease in the N30 complex amplitude after the application of HVLA thrust to a segment considered “relevant” (− 16.76 ± 28.32%, p  = 0.005). In contrast, no significant change was observed in the group that received HVLA thrust over a segment considered “non-relevant” ( p  = 0.757). Cervical HVLA thrust applied to the segment considered as “relevant” altered sensorimotor parameters, while cervical HVLA thrust over the segment considered as “non-relevant” did not. This finding supports the hypothesis that spinal site targeting of HVLA interventions is important when measuring neurophysiological responses. Further studies are needed to explore the potential clinical relevance of these findings.

Longer-term effects of chiropractic care on neuroplasticity, stress, and immune biomarkers remain unclear. This study evaluates the effects of chiropractic care on physiological biomarkers, including brain-derived neurotrophic factor (BDNF), cortisol (saliva, blood, hair), and inflammatory cytokines [interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), interferon-gamma (IFN-γ), C-reactive protein (CRP), B-lymphocytes (CD19), T-helper cells (CD4), cytotoxic T cells (CD8), and natural killer cells (CD56)] in subclinical spinal pain patients. Parallel-group, pragmatic randomized controlled trial conducted at the Rehabilitation Center of Railway General Hospital, Rawalpindi, Pakistan. Intervention: 12 weeks; follow-up: 16 weeks (May-December 2022). Participants with subclinical spinal pain were randomly assigned by using simple lottery method to either 12 weeks of chiropractic or sham care. We aimed to recruit up to 150 participants over three months; however, given the pragmatic nature of the trial and logistical constraints, including the availability of chiropractors, the final number enrolled was determined by how many eligible participants could be recruited during this time. Adults aged 20-60 years with subclinical spinal pain (n = 106 randomized; 88 completed 12-week measures; 73 completed 16-week follow-up). Among those who finished 12 weeks: chiropractic, 26 males/15 females, mean age 37.49 ± 12.39 years; sham, 24 males/23 females, mean age 26.85 ± 7.13 years. The primary outcome blood BDNF and secondary outcome, including saliva, blood and hair cortisol, IL-6, TNF-α, IFN-γ, CRP, CD19, CD4, CD8, and CD56 levels were measured at baseline, after 12 weeks of intervention, and at a 16-week follow-up. Linear and linear mixed-effects regression models were used to assess the effect of care and time on biological measures. Significant between-group differences were observed after 12 weeks of intervention, with higher salivary cortisol 5 ± 2 [0, 10], p = 0.045 and blood BDNF150 ± 60 (40, 270), p = 0.009 and IL-6 1.0 ± 0.3 [0.5, 1.5], p < 0.001 levels in the chiropractic care group. At the 16-week follow-up, blood cortisol -9 ± 4 [-17, -1], p = 0.024, IFN-γ - 22 ± 7 [-35, -9], and TNF-α -2 ± 1 [-5, 0], p = 0.028 levels increased in the sham group. Within-group comparisons showed a non-significant 10 ± 20 [-20, 50], p = 0.439 reduction in hair cortisol levels in the chiropractic group at 12 weeks, along with increased levels of blood cortisol, BDNF, CD8, CD4, IL-6, and CD19. 12 weeks of Chiropractic care modulates biomarkers linked to neuroplasticity, inflammation, and stress. Increases in brain-derived neurotrophic factor and interleukin-6 suggest enhanced neuroplasticity and inflammatory responses, while decreases in tumor necrosis factor-alpha indicate a regulatory effect on systemic inflammation. These findings support the notion that chiropractic care modulates physiological systemic biomarkers, which may underscore its benefits on clinical outcomes. ClinicalTrials.gov NCT05369156.

Background The COVID-19 pandemic profoundly disrupted health professional education, with lasting effects on student wellbeing. Following documented post-lockdown declines in quality of life (QOL) among chiropractic students in Aotearoa New Zealand, targeted wellbeing programs were implemented to support institutional recovery. Methods Medical Outcomes Study 36-Item Short-Form Health Survey data were collected, March–April 2024, and compared across time points (2019, 2022, 2024) and against New Zealand normative values. Wilcoxon signed-rank tests compared data with norms, and Wilcoxon rank-sum tests compared between-cohort, with effect sizes reported as rank-biserial correlations. Results One hundred and fourteen students (25.2 ± 5.5 years, 59.0% female) were compared with 276 pre-COVID (25.6 ± 5.2 years, 51.1% female) and 120 post-COVID (25.1 ± 6.0 years, 60.8% female) datasets. QOL declined markedly in 2022, with partial recovery by 2024. Improvements were most evident in Role Emotional (Year 4: 21.6 to 76.4, p  < .001), Emotional Wellbeing (Year 4: 50.7 to 73.8, p  < .001), and Energy and Fatigue (Year 4: 27.0 to 52.3, p  < .001). However, scores generally remained below 2019 levels, and Pain scores remained markedly lower than population norms. Conclusion By 2024, chiropractic students’ QOL had improved compared with post-COVID levels but had not fully returned to pre-pandemic values. While institutional and environmental factors may have supported partial recovery, persistent deficits in bodily pain experienced and reduction in energy and fatigue highlight the need for ongoing targeted support. These findings suggest that low-cost institutional wellbeing programs may have supported QOL recovery, though causality cannot be inferred from this design. Key Points Following the COVID-19 pandemic, chiropractic students in Aotearoa New Zealand experienced marked declines in quality of life, particularly in emotional wellbeing, energy, and social functioning. Two years after institutional wellbeing programs were introduced, students showed clear improvements across most areas, although pain and energy and fatigue levels remained below pre-pandemic levels. These findings suggest that low-cost wellbeing initiatives in health professional education can meaningfully support student recovery and may offer a cost-effective way to strengthen future healthcare workforce resilience.

Objective To explore differences in palpatory acuity between two independent student cohorts from 2015 to 2024, and to assess the potential effect of pedagogical changes in the teaching of palpation skills that emphasize sensory awareness over anatomical identification at the New Zealand College of Chiropractic (NZCC). Methods This study was a comparative cross-sectional study using two independent student cohorts. In 2015, palpatory acuity was assessed in 199 chiropractic students (42.5% female, mean: 25.8 ± 7.4 years) from 4 different cohorts. In 2024, 154 students (54.5% female, mean: 23.6 ± 5.6 years) over 4 cohorts were assessed. Palpatory acuity was measured by the participant’s ability to accurately locate a 0.1 mm nylon monofilament under a variable number of 80gsm white copying paper sheets while blindfolded. Unpaired Wilcoxon rank sum tests were used to assess differences between timepoints (2015 and 2024) and year groups. Results The 2024 group (mean: 67.8 ± 22.5 pages) demonstrated significantly higher palpatory acuity compared with the 2015 group (mean: 31.1 ± 22.4 pages, p  < .001). All cohorts in 2024 outperformed their 2015 counterparts ( p  < .001). In both groups, acuity improved notably between cohorts in years 2 and 3 but showed minimal further gains in the final year. In the 2015 group, year 3 (mean: 38.0 ± 24.4) and year 4 (mean: 37.5 ± 20.1) students outperformed year 1 (mean: 25.1 ± 19.8, p  = .028–0.040) and year 2 students (mean: 26.3 ± 22.6, p  = .039–0.040). In the 2024 group, year 3 students (mean: 81.7 ± 15.2) performed significantly better than year 1 (mean: 59.8 ± 22.5, p  < .001) and year 2 students (mean: 70.6 ± 17.5, p  = .023). Discussion These findings suggest that emphasizing sensory experience in palpation training may enhance student performance. Educators may consider integrating more structured haptic exercises early in curricula, while future research should explore longitudinal outcomes and the neural mechanisms underlying skill acquisition to guide further educational reform. Conclusion Curricular and pedagogical changes at NZCC were linked to significantly greater palpatory acuity in students. Palpatory acuity appears to improve early-to-midway through training (regardless of the method used to teach it), with limited gains thereafter. Practical experience and repetition contribute to improving acuity, but this study highlights the value of sensory-focused practice in curriculum design for chiropractic education.

The current COVID-19 pandemic has necessitated the need to find healthcare solutions that boost or support immunity. There is some evidence that high-velocity, low-amplitude (HVLA) controlled vertebral thrusts have the potential to modulate immune mediators. However, the mechanisms of the link between HVLA controlled vertebral thrusts and neuroimmune function and the associated potential clinical implications are less clear. This review aims to elucidate the underlying mechanisms that can explain the HVLA controlled vertebral thrust--neuroimmune link and discuss what this link implies for clinical practice and future research needs. A search for relevant articles published up until April 2021 was undertaken. Twenty-three published papers were found that explored the impact of HVLA controlled vertebral thrusts on neuroimmune markers, of which eighteen found a significant effect. These basic science studies show that HVLA controlled vertebral thrust influence the levels of immune mediators in the body, including neuropeptides, inflammatory markers, and endocrine markers. This narravtive review discusses the most likely mechanisms for how HVLA controlled vertebral thrusts could impact these immune markers. The mechanisms are most likely due to the known changes in proprioceptive processing that occur within the central nervous system (CNS), in particular within the prefrontal cortex, following HVLA spinal thrusts. The prefrontal cortex is involved in the regulation of the autonomic nervous system, the hypothalamic–pituitary–adrenal axis and the immune system. Bi-directional neuro-immune interactions are affected by emotional or pain-related stress. Stress-induced sympathetic nervous system activity also alters vertebral motor control. Therefore, there are biologically plausible direct and indirect mechanisms that link HVLA controlled vertebral thrusts to the immune system, suggesting HVLA controlled vertebral thrusts have the potential to modulate immune function. However, it is not yet known whether HVLA controlled vertebral thrusts have a clinically relevant impact on immunity. Further research is needed to explore the clinical impact of HVLA controlled vertebral thrusts on immune function.

The effect of body posture on the human soleus H-reflex via electrical stimulation of the tibial nerve at the popliteal fossa was studied. All parameters that may influence the reflex were controlled stringently. H-reflexes were elicited in three different body postures while keeping the level of background muscle activation to a minimum. The H-reflex curve relative to the M-wave curve did not change significantly in any of the body postures. However, the maximal H-reflex amplitude significantly increased in the prone position compared with the sitting (p = 0.02) and standing positions (p = 0.01). The background level of electrical activity of the soleus muscle did not significantly change during varying body postures. Together, these findings indicate that the effectiveness of the spindle primary afferent synapse on the soleus motor neuron pool changes significantly in prone position as compared to sitting and standing positions. Given that we have controlled the confounding factors excluding the head position relative to the gravity and the receptors that may be differentially activated at varying body postures such as the proprioceptors, it is concluded that the tonic activity from these receptors may presynaptically interfere with the effectiveness of the spindle primary afferent synapses on the soleus motor neurons.

Mild cognitive impairment (MCI) is a stage between health and dementia, with various symptoms including memory, language, and visuospatial impairment. Chiropractic, a manual therapy that seeks to improve the function of the body and spine, has been shown to affect sensorimotor processing, multimodal sensory processing, and mental processing tasks. In this paper, the effect of chiropractic intervention on Electroencephalogram (EEG) signals in patients with mild cognitive impairment was investigated. EEG signals from two groups of patients with mild cognitive impairment ( = 13 people in each group) were recorded pre- and post-control and chiropractic intervention. A comparison of relative power was done with the support vector machine (SVM) method and non-parametric cluster-based permutation test showing the two groups could be separately identified with high accuracy. The highest accuracy was obtained in beta2 (25-35 Hz) and theta (4-8 Hz) bands. A comparison of different brain areas with the SVM method showed that the intervention had a greater effect on frontal areas. Also, interhemispheric coherence in all regions increased significantly after the intervention. The results of the Wilcoxon test showed that intrahemispheric coherence changes in frontal-occipital, frontal-temporal and right temporal-occipital regions were significantly different in two groups. Comparison of the results obtained from chiropractic intervention and previous studies shows that chiropractic intervention can have a positive effect on MCI disease and using this method may slow down the progression of mild cognitive impairment to Alzheimer's disease.

Objectives. Studies have shown decreases in N30 somatosensory evoked potential (SEP) peak amplitudes following spinal manipulation (SM) of dysfunctional segments in subclinical pain (SCP) populations. This study sought to verify these findings and to investigate underlying brain sources that may be responsible for such changes. Methods. Nineteen SCP volunteers attended two experimental sessions, SM and control in random order. SEPs from 62-channel EEG cap were recorded following median nerve stimulation (1000 stimuli at 2.3 Hz) before and after either intervention. Peak-to-peak amplitude and latency analysis was completed for different SEPs peak. Dipolar models of underlying brain sources were built by using the brain electrical source analysis. Two-way repeated measures ANOVA was used to assessed differences in N30 amplitudes, dipole locations, and dipole strengths. Results. SM decreased the N30 amplitude by 16.9±31.3% (P=0.02), while no differences were seen following the control intervention (P=0.4). Brain source modeling revealed a 4-source model but only the prefrontal source showed reduced activity by 20.2±12.2% (P=0.03) following SM. Conclusion. A single session of spinal manipulation of dysfunctional segments in subclinical pain patients alters somatosensory processing at the cortical level, particularly within the prefrontal cortex.

Objectives: In this study, we explored the effects of chiropractic spinal adjustments on resting-state electroencephalography (EEG) recordings and early somatosensory evoked potentials (SEPs) in Alzheimer’s and Parkinson’s disease. Methods: In this randomized cross-over study, 14 adults with Alzheimer’s disease (average age 67 ± 6 years, 2 females:12 males) and 14 adults with Parkinson’s disease (average age 62 ± 11 years, 1 female:13 males) participated. The participants underwent chiropractic spinal adjustments and a control (sham) intervention in a randomized order, with a minimum of one week between each intervention. EEG was recorded before and after each intervention, both during rest and stimulation of the right median nerve. The power-spectra was calculated for resting-state EEG, and the amplitude of the N30 peak was assessed for the SEPs. The source localization was performed on the power-spectra of resting-state EEG and the N30 SEP peak. Results: Chiropractic spinal adjustment significantly reduced the N30 peak in individuals with Alzheimer’s by 15% (p = 0.027). While other outcomes did not reach significance, resting-state EEG showed an increase in absolute power in all frequency bands after chiropractic spinal adjustments in individuals with Alzheimer’s and Parkinson’s disease. The findings revealed a notable enhancement in connectivity within the Default Mode Network (DMN) at the alpha, beta, and theta frequency bands among individuals undergoing chiropractic adjustments. Conclusions: We found that it is feasible to record EEG/SEP in individuals with Alzheimer’s and Parkinson’s disease. Additionally, a single session of chiropractic spinal adjustment reduced the somatosensory evoked N30 potential and enhancement in connectivity within the DMN at the alpha, beta, and theta frequency bands in individuals with Alzheimer’s disease. Future studies may require a larger sample size to estimate the effects of chiropractic spinal adjustment on brain activity. Given the preliminary nature of our findings, caution is warranted when considering the clinical implications. Clinical Trial Registration: The study was registered by the Australian New Zealand Clinical Trials Registry (registration number ACTRN12618001217291 and 12618001218280).