Lindhardtvittrup2506

Discovery of such a feeding behavior in this ancient, terrestrial, and omnivorous animal provides direct evidence of the deep history of directional behavior among amniotes and may indicate an early origin of brain lateralization.Introduction We aimed to compare the antimicrobial efficacy of chlorhexidine (CHX) and sodium hypochlorite (NaOCl), two irrigants routinely used in root canal therapy of permanent teeth. Methods Electronic databases, including PubMed, EMBASE, Web of Science, and Cochrane Library, were searched for randomized controlled trials published until March 2020. The meta-analysis of relative risk (RR) and standardized mean difference (SMD) was performed using a random-effect model with a 95% confidence interval (CI). Subgroup analysis was performed for culture and molecular methods of bacterial detection. Results The literature search yielded 2,110 records without duplicates. Eight studies were eligible for a systematic review. No significant differences in the incidence of samples with positive bacterial growth after irrigation (RR=1.003, 95% CI 0.729-1.380, p=0.987) and mean bacterial number changes (SMD=0.311, 95% CI -0.368-0.991, p=0.369) were observed between CHX and NaOCl in the culture and molecular subgroups. read more Heterogeneity in RR (I2=0%, p=0.673) was low among studies, while considerable heterogeneity was observed in the analysis of SMD (I2=76.336%, p=0.005). Conclusion Our findings suggest that both CHX and NaOCl can reduce bacterial infections after irrigation, without any significant difference in antimicrobial efficacy between them. Although CHX and NaOCl showed similar efficacy, their molecular mechanisms were different. Therefore, they can be used as the main antibacterial root canal irrigants. However, our results were limited by inconsistencies among retrieved articles and a lack of clinically relevant outcomes. Further well-designed clinical studies are warranted to supplement our results.Purpose To assess public preferences and perceptions regarding negative chest radiograph reports. Methods Using Amazon Mechanical Turk (Amazon Inc, Seattle, Washington), paid US English-speaking volunteers completed an 18-question survey. Participants were presented with the same two chest radiograph reports-one each in a freestyle and structured format-but randomized to one of four impression statements commonly used in our community. Participants were asked about content comprehension and confidence in the hypothetical interpreting radiologist. Results Over 15 days, 5,155 eligible participants completed the survey (of 6,363 respondents). Most reported prior chest radiography (68.9%) or any imaging (93.8%). Of those who underwent chest radiography, 77.6% reviewed their reports. Participants indicated structured reports were easier to comprehend (P less then .001) but no difference in perceived confidence in the radiologist with freestyle versus structured reports (P = .21). No differences in comprehension were noted between different impressions with either freestyle (P = .077) or structured (P = .083) reports. Participants indicated higher confidence in radiologists when structured reports indicated "no acute disease" versus "unremarkable" (P = .049). When impressions stated "no acute disease," participants indicated they would be more likely to do nothing, versus "negative chest" for which they indicated a higher likelihood of taking some action (P = .013, P = .04). Participant responses were similar for subgroups who previously underwent chest or other imaging and previously reviewed their imaging reports. Conclusion For negative chest radiographs, structured reports are better comprehended by the public and less likely to prompt unnecessary follow-up. As patients increasingly access their medical records online, radiologist reporting should consider patient needs and behavior.Temporally independent functional modes (TFMs) are functional brain networks identified based on their temporal independence. The rationale behind identifying TFMs is that different functional networks may share a common anatomical infrastructure yet display distinct temporal dynamics. Extracting TFMs usually require a larger number of samples than acquired in standard fMRI experiments, and thus have therefore previously only been performed at the group level. Here, using an ultra-fast fMRI sequence, MESH-EPI, with a volume repetition time of 158ms, we conducted an exploratory study with n=6 subjects and computed TFMs at the single subject level on both task and resting-state datasets. We identified 6 common temporal modes of activity in our participants, including a temporal default mode showing patterns of anti-correlation between the default mode and the task-positive networks, a lateralized motor mode and a visual mode integrating the visual cortex and the visual streams. In alignment with other findings reported recently, we also showed that independent time-series are largely free from confound contamination. In particular for ultra-fast fMRI, TFMs can separate the cardiac signal from other fluctuations. Using a non-linear dimensionality reduction technique, UMAP, we obtained preliminary evidence that combinations of spatial networks as described by the TFM model are highly individual. Our results show that it is feasible to measure reproducible TFMs at the single-subject level, opening new possibilities for investigating functional networks and their integration. Finally, we provide a python toolbox for generating TFMs and comment on possible applications of the technique and avenues for further investigation.Interest in behavioral activation treatments for depression has increased over the past two decades. Behavioral activation treatments have been shown to be effective in treating depression across a variety of populations and settings. However, little is known about the mechanisms of change that may bring about symptom improvement in behavioral activation treatments. Recent developments in the theoretical and empirical literature on behavioral activation treatments have coincided with advances in basic science and translational neuroscience regarding the mechanisms underlying individual differences in responsiveness to reward. Attenuated reward responsiveness has been associated with depression and related clinical outcomes at the self-report, behavioral, and neural levels of analysis. Given that behavioral activation treatments are focused on increasing individuals' contact and engagement with sustainable sources of reward in their environment, it is plausible that behavioral activation treatments bring about improvements in depression symptoms by targeting (low) reward responsiveness directly.