The DNA G + C content of the draft genome sequence is 70.2 mol%. The average nucleotide identity and digital DNA-DNA hybridizations values of strain YIM 132548 T with M. soli YIM 48816 T and M. durans NBRC 112876 T were 87.0% and 82.0%, 40.6% and 27.2% based on draft genome sequences, respectively. On the basis of phylogenetic, chemotaxonomic, phenotypic and genomic data, strain YIM 132548 T is concluded to represent a novel species of the genus Methylobacterium, for which the name Methylobacterium planium sp. nov. is proposed. The type strain is YIM 132548 T (= CGMCC 1.17323 T = NBRC 114056 T).Transcranial magnetic stimulation (TMS) is one of the most popular non-invasive tools for investigating the cortical circuits involved in human movement. Stimulation of the primary motor cortex elicits motor evoked potentials in peripheral muscles, the amplitude of which reflects the net excitability of circuits in the cortex and spinal cord. https://www.selleckchem.com/products/Irinotecan-cpt-11.html A number of methods exist to help broadly distinguish between excitatory and inhibitory influences on corticospinal output, allowing us to probe changes in the respective cortical circuits before and during movement. Something that has rarely been considered in human TMS studies, however, is the idea that specific populations of excitatory neurons might underlie different aspects of motor behavior. The current article provides a brief review of recent TMS studies which suggest that it is possible to selectively probe distinct excitatory inputs to corticospinal neurons during a range of movement-related states, from the preparation and execution of movements, to the suppression of unwanted movements. Together with recent advancements in computational modelling of the mechanisms of TMS and the capacity to record single-cell responses to TMS in behaving non-human primates, this avenue of research has the potential to shed light on the motor circuits underlying the repertoire of human motor behaviors, as well as their pathophysiology in diseases of the motor system.Humans employ anticipatory muscle activation when catching under conditions of load uncertainty. Questions addressed were (a) on what information referent do catchers base their anticipatory neuromotor control when catching ***** of unknown weight?, and (b) how do catchers use this functional referent? Thirty-six participants caught visually identical ***** dropped from 0.75 m. Participants performed 40 trials, half with knowledge of ball weight and half without. Group L caught ***** with a large weight range, while group S caught ***** with a smaller range of weights. EMG integrals were computed for the ball flight period in five muscles. Anticipatory EMG integrals in the unknown weight condition were normalized to anticipatory EMG integrals for the maximum, minimum and average ball weights in the known ball weight condition. We assumed participants would base anticipatory control in the unknown weight condition on similar information, regardless of group. Therefore, differences in normalized EMG integrals between groups L and S would suggest that the specific referent tested (e.g., minimum possible ball weight) was not used to scale anticipatory muscle activation under load uncertainty. Independent sample t tests ascertained differences in normalized EMG integrals between groups L and S. The results suggested that the information referent participants used to catch ***** of an unknown weight was knowledge of the maximum ball weight. Participants used this referent to generate a submaximal level of anticipatory muscle activation, i.e., about 93.2% of that used to catch the heaviest ball when ball weight was known in advance.The family of hereditary cerebellar ataxias is a large group of disorders with heterogenous clinical manifestations and genetic etiologies. Among these, over 30 autosomal dominantly inherited subtypes have been identified, collectively referred to as the spinocerebellar ataxias (SCAs). Generally, the SCAs are characterized by a progressive gait impairment with classical cerebellar features, and in a subset of SCAs, accompanied by extra-cerebellar features. Beyond the common gait impairment and cerebellar atrophy, the wide range of additional clinical features observed across the SCAs is likely explained by the diverse set of mutated genes that encode proteins with seemingly disparate functional roles in nervous system biology. By synthesizing knowledge obtained from studies of the various SCAs over the past several decades, convergence onto a few key cellular changes, namely ion channel dysfunction and transcriptional dysregulation, has become apparent and may represent central mechanisms of cerebellar disease pathogenesis. This review will detail our current understanding of the molecular pathogenesis of the SCAs, focusing primarily on the first described autosomal dominant spinocerebellar ataxia, SCA1, as well as the emerging common core mechanisms across the various SCAs.Disorders of consciousness (DoC) are acquired conditions of severe altered consciousness. During the past decades, some prognostic models for DoC have been explored on the basis of a variety of predictors, including demographics, neurological examinations, clinical diagnosis, neurophysiology and brain images. In this article, a systematic review of pertinent literature was conducted. We identified and evaluated 21 prognostic models involving a total of 1201 DoC patients. In terms of the reported accuracies of predicting the prognosis of DoC, these 21 models vary widely, ranging from 60 to 90%. Using improvement of consciousness level as favorable outcome criteria, we performed a quantitative meta-analysis, and found that the pooled sensitivity and specificity of the hybrid model that combined more than one technique were both superior to those of any single technique, including EEG and fMRI at the tasks and resting state. These results support the view that any single technique has its own advantages and limitations; and the integrations of multiple techniques, including diverse brain images and different paradigms, have the potential to improve predictive accuracy for DoC. Then, we provide methodological points of view and some prospects about future research. Totally, in comparison to a great many diagnostic methods for the DoC, the research of prognostic models is sparse and preliminary, still largely in its infancy with many challenges and opportunities.
The DNA G + C content of the draft genome sequence is 70.2 mol%. The average nucleotide identity and digital DNA-DNA hybridizations values of strain YIM 132548 T with M. soli YIM 48816 T and M. durans NBRC 112876 T were 87.0% and 82.0%, 40.6% and 27.2% based on draft genome sequences, respectively. On the basis of phylogenetic, chemotaxonomic, phenotypic and genomic data, strain YIM 132548 T is concluded to represent a novel species of the genus Methylobacterium, for which the name Methylobacterium planium sp. nov. is proposed. The type strain is YIM 132548 T (= CGMCC 1.17323 T = NBRC 114056 T).Transcranial magnetic stimulation (TMS) is one of the most popular non-invasive tools for investigating the cortical circuits involved in human movement. Stimulation of the primary motor cortex elicits motor evoked potentials in peripheral muscles, the amplitude of which reflects the net excitability of circuits in the cortex and spinal cord. https://www.selleckchem.com/products/Irinotecan-cpt-11.html A number of methods exist to help broadly distinguish between excitatory and inhibitory influences on corticospinal output, allowing us to probe changes in the respective cortical circuits before and during movement. Something that has rarely been considered in human TMS studies, however, is the idea that specific populations of excitatory neurons might underlie different aspects of motor behavior. The current article provides a brief review of recent TMS studies which suggest that it is possible to selectively probe distinct excitatory inputs to corticospinal neurons during a range of movement-related states, from the preparation and execution of movements, to the suppression of unwanted movements. Together with recent advancements in computational modelling of the mechanisms of TMS and the capacity to record single-cell responses to TMS in behaving non-human primates, this avenue of research has the potential to shed light on the motor circuits underlying the repertoire of human motor behaviors, as well as their pathophysiology in diseases of the motor system.Humans employ anticipatory muscle activation when catching under conditions of load uncertainty. Questions addressed were (a) on what information referent do catchers base their anticipatory neuromotor control when catching balls of unknown weight?, and (b) how do catchers use this functional referent? Thirty-six participants caught visually identical balls dropped from 0.75 m. Participants performed 40 trials, half with knowledge of ball weight and half without. Group L caught balls with a large weight range, while group S caught balls with a smaller range of weights. EMG integrals were computed for the ball flight period in five muscles. Anticipatory EMG integrals in the unknown weight condition were normalized to anticipatory EMG integrals for the maximum, minimum and average ball weights in the known ball weight condition. We assumed participants would base anticipatory control in the unknown weight condition on similar information, regardless of group. Therefore, differences in normalized EMG integrals between groups L and S would suggest that the specific referent tested (e.g., minimum possible ball weight) was not used to scale anticipatory muscle activation under load uncertainty. Independent sample t tests ascertained differences in normalized EMG integrals between groups L and S. The results suggested that the information referent participants used to catch balls of an unknown weight was knowledge of the maximum ball weight. Participants used this referent to generate a submaximal level of anticipatory muscle activation, i.e., about 93.2% of that used to catch the heaviest ball when ball weight was known in advance.The family of hereditary cerebellar ataxias is a large group of disorders with heterogenous clinical manifestations and genetic etiologies. Among these, over 30 autosomal dominantly inherited subtypes have been identified, collectively referred to as the spinocerebellar ataxias (SCAs). Generally, the SCAs are characterized by a progressive gait impairment with classical cerebellar features, and in a subset of SCAs, accompanied by extra-cerebellar features. Beyond the common gait impairment and cerebellar atrophy, the wide range of additional clinical features observed across the SCAs is likely explained by the diverse set of mutated genes that encode proteins with seemingly disparate functional roles in nervous system biology. By synthesizing knowledge obtained from studies of the various SCAs over the past several decades, convergence onto a few key cellular changes, namely ion channel dysfunction and transcriptional dysregulation, has become apparent and may represent central mechanisms of cerebellar disease pathogenesis. This review will detail our current understanding of the molecular pathogenesis of the SCAs, focusing primarily on the first described autosomal dominant spinocerebellar ataxia, SCA1, as well as the emerging common core mechanisms across the various SCAs.Disorders of consciousness (DoC) are acquired conditions of severe altered consciousness. During the past decades, some prognostic models for DoC have been explored on the basis of a variety of predictors, including demographics, neurological examinations, clinical diagnosis, neurophysiology and brain images. In this article, a systematic review of pertinent literature was conducted. We identified and evaluated 21 prognostic models involving a total of 1201 DoC patients. In terms of the reported accuracies of predicting the prognosis of DoC, these 21 models vary widely, ranging from 60 to 90%. Using improvement of consciousness level as favorable outcome criteria, we performed a quantitative meta-analysis, and found that the pooled sensitivity and specificity of the hybrid model that combined more than one technique were both superior to those of any single technique, including EEG and fMRI at the tasks and resting state. These results support the view that any single technique has its own advantages and limitations; and the integrations of multiple techniques, including diverse brain images and different paradigms, have the potential to improve predictive accuracy for DoC. Then, we provide methodological points of view and some prospects about future research. Totally, in comparison to a great many diagnostic methods for the DoC, the research of prognostic models is sparse and preliminary, still largely in its infancy with many challenges and opportunities.
0 Comments
0 Shares
152 Views
0 Reviews
