Electroencephalographic spectro-spatial covariance patterns related to phenoconversion in isolated rapid eye movement sleep behavior disorder and their longitudinal trajectories in α-synucleinopathies.

Study Objectives: This study aimed to identify electroencephalographic (EEG) spectro-spatial covariance patterns associated with phenoconversion in isolated rapid eye movement sleep behavior disorder (iRBD) patients and explore their longitudinal trajectories within α-synucleinopathies.

Methods: We assessed 47 participants, including 35 patients with iRBD and 12 healthy controls (HC), through baseline eye-closed resting EEGs. Patients with iRBD underwent follow-up EEG assessments and 18 patients with iRBD converted (12 to Parkinson's disease (PD), 6 to dementia with Lewy bodies [DLB]) during follow-up.

EEG-based machine learning models for the prediction of phenoconversion time and subtype in isolated rapid eye movement sleep behavior disorder.

Study Objectives: Isolated rapid eye movement sleep behavior disorder (iRBD) is a prodromal stage of α-synucleinopathies and eventually phenoconverts to overt neurodegenerative diseases including Parkinson's disease (PD), dementia with Lewy bodies (DLB), and multiple system atrophy (MSA). Associations of baseline resting-state electroencephalography (EEG) with phenoconversion have been reported. In this study, we aimed to develop machine learning models to predict phenoconversion time and subtype using baseline EEG features in patients with iRBD.

Characterization of attentional event-related potential from REM sleep behavior disorder patients based on explainable machine learning.

Background And Objective: Idiopathic rapid eye movement sleep behavior disorder (iRBD) is a prodromal stage of neurodegeneration and is associated with cortical dysfunction. The purpose of this study was to investigate the spatiotemporal characteristics of cortical activities underlying impaired visuospatial attention in iRBD patients using an explainable machine-learning approach.

Methods: An algorithm based on a convolutional neural network (CNN) was devised to discriminate cortical current source activities of iRBD patients due to single-trial event-related potentials (ERPs), from those of normal controls.

Consumers' perceived effectiveness of COVID-19 mitigation strategies in restaurants: What went well and what could we do better?

As restaurants are resuming normal operations, COVID-19 mitigation strategies are still in place. An effective COVID-19 mitigation protocol may facilitate a more successful rebound since consumers may perceive a lowered risk to purchase food from the restaurant with protocols in place. However, little is known regarding how consumers evaluate restaurants' present efforts to contain the transmission of COVID-19.

Alerting network alteration in isolated rapid eye movement sleep behavior disorder patients with mild cognitive impairment.

Objective: Mild cognitive impairment (MCI) was found in 30-50% of the isolated REM sleep behavior disorder (iRBD) patients. Furthermore, it is known that patients with Parkinson's disease have attention network defects. Given that iRBD is known to be the prodromal disease of α-synucleinopathies, our aim was to investigate whether there are attention network dysfunctions in iRBD patients following the presence of MCI.

The adherence-associated Fdp fasciclin I domain protein of the biohydrogen producer is regulated by the global Prr pathway.

Expression of encoding a fasciclin I domain protein important for adherence in the hydrogen-producing bacterium was investigated under a range of conditions to gain insights into optimization of adherence for immobilization strategies suitable for H production. The promoter was linked to a reporter and expressed in wild type and in PRRB and PRRA mutant strains of the Prr regulatory pathway. Expression was significantly negatively regulated by Prr under all conditions of aerobiosis tested including anaerobic conditions (required for H production), and aerobically regardless of growth phase, growth medium complexity or composition, carbon source, heat and cold shock and dark/light conditions.

Redox-responsive in vitro modulation of the signalling state of the isolated PrrB sensor kinase of Rhodobacter sphaeroides NCIB 8253.

Prr is a global regulatory system that controls a large and diverse range of genes in Rhodobacter sphaeroides in response to changing conditions of environmental redox potential. PrrB is the membrane-bound sensor kinase and previously we showed that the purified, detergent-solubilised intact membrane protein is functional in autophosphorylation, phosphotransfer and phosphatase activities. Here we confirm that it also senses and responds directly to its environmental signal, redox potential; strong autophosphorylation of PrrB occurred in response to dithiothreitol (DTT)-induced reducing conditions (and levels increased in response to a wide 0.

Novel insertion sequence elements associated with genetic heterogeneity and phenotype conversion in Ralstonia solanacearum.

Three insertion sequences (IS) elements were isolated from the phytopathogen Ralstonia solanacearum. Southern hybridization using these IS elements as probes revealed hybridization profiles that varied greatly between different strains of the pathogen. During a spontaneous phenotype conversion event, the promoter of the phcA gene was interrupted by one of these IS elements.