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JOURNAL ARTICLE
Hong Ao, Diederik Liebrand, Mark J Dekkers, Andrew P Roberts, Tara N Jonell, Zhangdong Jin, Yougui Song, Qingsong Liu, Qiang Sun, Xinxia Li, Chunju Huang, Xiaoke Qiang, Peng Zhang
Intensification of northern hemisphere glaciation (iNHG), ~2.7 million years ago (Ma), led to establishment of the Pleistocene to present-day bipolar icehouse state. Here we document evolution of orbital- and millennial-scale Asian winter monsoon (AWM) variability across the iNHG using a palaeomagnetically dated centennial-resolution grain size record between 3.6 and 1.9 Ma from a previously undescribed loess-palaeosol/red clay section on the central Chinese Loess Plateau. We find that the late Pliocene-early Pleistocene AWM was characterized by combined 41-kyr and ~100-kyr cycles, in response to ice volume and atmospheric CO2 forcing...
April 19, 2024: Nature Communications
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JOURNAL ARTICLE
Santiago Candela-Cantó, José Hinojosa, Jordi Muchart, Cristina Jou, Laura Palau, Carlos Valera, Cecilia Flores, Andrea Palacio-Navarro, María Alejandra Climent, Anna Pascual, Adrià Gonzalez, Diego Culebras, Mariana Alamar, Victoria Becerra, Javier Aparicio, Jordi Rumià
Magnetic resonance imaging-guided laser interstitial thermal therapy (MRIgLITT) has been proven safe and effective for the treatment of focal epilepsy of different etiologies. It has also been used to disconnect brain tissue in more extensive or diffuse epilepsy, such as corpus callosotomy and hemispherotomy. In this study, we report a case of temporo-parieto-occipital disconnection (TPO) surgery performed using MRIgLITT assisted by a robotic arm for refractory epilepsy of the posterior quadrant. A highly realistic cadaver simulation was performed before the actual surgery...
April 17, 2024: World Neurosurgery
#23
JOURNAL ARTICLE
Lidiane Aparecida Fernandes, Tércio Apolinário-Souza, Gabriela Castellano, Beatriz Couto Fortuna, Guilherme Menezes Lage
Left and right-hand exhibit differences in the execution of movements. Particularly, it has been shown that manual goal-directed aiming is more accurate with the right hand than with the left, which has been explained through the shorter time spent by the right hand in the feedback phase (FB). This explanation makes sense for the temporal aspects of the task; however, there is a lack of explanations for the spatial aspects. The present study hypothesizes that the right hand is more associated with the FB, while the left hand is more strongly associated with the pre-programming phase (PP)...
April 17, 2024: Behavioural Brain Research
#24
JOURNAL ARTICLE
Jiaji Lin, Xiaopeng Kang, Jiayou Zhou, Dekang Zhang, Jianxing Hu, Haoxuan Lu, Longsheng Pan, Xin Lou
BACKGROUND: MR-guided focused ultrasound (MRgFUS) thalamotomy is a novel and effective treatment for medication-refractory tremor in essential tremor (ET), but how the brain responds to this deliberate lesion is not clear. OBJECTIVE: The current study aimed to evaluate the immediate and longitudinal alterations of functional networks after MRgFUS thalamotomy. METHODS: We retrospectively obtained preoperative and postoperative 30-day, 90-day, and 180-day data of 31 ET patients subjected with MRgFUS thalamotomy from 2018 to 2020...
April 15, 2024: NeuroImage: Clinical
#25
JOURNAL ARTICLE
Fangfang Xie, Chunyao Zhou, Hong Jin, Wu Xing, Dongcui Wang
OBJECTIVE: In this study, the diffusion tensor imaging along perivascular space analysis (DTI-ALPS) technique was utilized to evaluate the functional changes in the glymphatic system of the bilateral hemispheres in patients with unilateral temporal lobe epilepsy (TLE) accompanied by hippocampal sclerosis (HS). The aim was to gain insights into the alterations in the glymphatic system function in TLE patients. METHODS: A total of 61 unilateral TLE patients with HS and 53 healthy controls (HCs) from the Department of Neurosurgery at Xiangya Hospital were included in the study...
April 18, 2024: Epilepsy & Behavior: E&B
#26
JOURNAL ARTICLE
Shoko Kimoto, Yasuo Naito, Takashi Nishikawa
BACKGROUND: Patients with cerebrovascular disorders (CVDs) tend to exhibit impulsive behaviour without controlling their movements, leading to difficulty in performing activities of daily living and an increased risk of accidents. This hastiness, termed 'pacing impairment', has been studied but is not fully understood. OBJECTIVE: To experimentally examine the kinetic features of pacing impairment by focusing on changes in speed and investigating neuropsychological substrates...
April 17, 2024: NeuroRehabilitation
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JOURNAL ARTICLE
Lei Dai, Wanying Zhang, Huihuang Zhang, Linjie Fang, Jianer Chen, Xiang Li, Hong Yu, Jianfei Song, Shishi Chen, Beisi Zheng, Yujia Zhang, Zhongyi Li
BACKGROUND: The therapeutic effect and mechanism of robot-assisted upper limb training (RT) combined with intermittent theta burst stimulation (iTBS) for stroke patients are unclear. OBJECTIVE: The purpose of this study was to evaluate changes in brain activation after combination therapy and RT alone using functional near-infrared spectroscopy (fNIRS). METHODS: Patients were randomly assigned to two groups (iTBS + RT Group, n = 18, and RT Group, n = 18)...
April 13, 2024: NeuroRehabilitation
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JOURNAL ARTICLE
Kyung Ah Woo, Han-Joon Kim, Jung Hwan Shin, Kangyoung Cho, Hongyoon Choi, Beomseok Jeon
BACKGROUND: Rapid eye movement sleep behavior disorder (RBD) may precede or follow motor symptoms in Parkinson's disease (PD). While over 70% of idiopathic RBD cases phenoconvert within a decade, a small subset develops PD after a more extended period or remains nonconverted. These heterogeneous manifestations of RBD in PD prompt subtype investigations. Premotor RBD may signify "body-first" PD with bottom-up, symmetric synucleinopathy propagation. OBJECTIVE: Explore brainstem and nigrostriatal monoaminergic degeneration pattern differences based on premotor RBD presence and duration in de novo PD patients...
April 12, 2024: Journal of Parkinson's Disease
#29
JOURNAL ARTICLE
Alan N Francis, Sophie Sebille, Susan Whitfield-Gabrieli, Joan A Camprodon
Tobacco cigarette smoking is associated with disrupted brain network dynamics in resting brain networks including the Salience (SN) and Fronto parietal (FPN). Unified multimodal methods [Resting state connectivity analysis, Diffusion Tensor Imaging (DTI), neurite orientation dispersion and density imaging (NODDI), and cortical thickness analysis] were employed to test the hypothesis that the impact of cigarette smoking on the balance among these networks is due to alterations in white matter connectivity, microstructural architecture, functional connectivity and cortical thickness (CT) and that these metrics define fundamental differences between people who smoke and nonsmokers...
April 19, 2024: Brain Imaging and Behavior
#30
Koji Obara
Though rare, autoimmune paraneoplastic and non-paraneoplastic chorea can be leading causes of adult-onset acute/subacute chorea. Here, we report a case of acute-onset chorea with suspected autoimmune-mediated mechanisms in a 79-year-old female who exhibited acute-onset choreiform movements on the right side of her body. She tested positive for anti-centromere antibodies (ACAs) without displaying symptoms of scleroderma. Blood sugar levels, genetic testing for Huntington's disease, and an antibody panel related to paraneoplastic neurological syndrome were unremarkable...
March 2024: Curēus
#31
JOURNAL ARTICLE
Shilong Fu, Haibing Liu, Guofeng Wang, Xiaofang Hu, Shousen Wang
BACKGROUND: Post-traumatic acute brain swelling (ABS) is a major cause of elevated intracranial pressure and thus mortality. The current definition of post-traumatic ABS has certain limitations, and there is limited information available regarding ABS associated with traumatic acute subdural hematoma (ASDH). OBJECTIVES: To investigate the incidence, risk factors, and clinical outcomes of ABS associated with traumatic ASDH. DESIGN: Retrospective study...
2024: Therapeutic Advances in Neurological Disorders
#32
JOURNAL ARTICLE
Sohae Chung, Tamar Bacon, Joseph F Rath, Alaleh Alivar, Santiago Coelho, Prin Amorapanth, Els Fieremans, Dmitry S Novikov, Steven R Flanagan, Joshua H Bacon, Yvonne W Lui
BACKGROUND AND PURPOSE: Because the corpus callosum connects the left and right hemispheres and a variety of WM bundles across the brain in complex ways, damage to the neighboring WM microstructure may specifically disrupt interhemispheric communication through the corpus callosum following mild traumatic brain injury. Here we use a mediation framework to investigate how callosal interhemispheric communication is affected by WM microstructure in mild traumatic brain injury. MATERIALS AND METHODS: Multishell diffusion MR imaging was performed on 23 patients with mild traumatic brain injury within 1 month of injury and 17 healthy controls, deriving 11 diffusion metrics, including DTI, diffusional kurtosis imaging, and compartment-specific standard model parameters...
April 18, 2024: AJNR. American Journal of Neuroradiology
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JOURNAL ARTICLE
Marco Del Riccio, Saverio Caini, Guglielmo Bonaccorsi, Chiara Lorini, John Paget, Koos van der Velden, Adam Meijer, Mendel Haag, Ian McGovern, Patrizio Zanobini
INTRODUCTION: The COVID-19 pandemic significantly changed respiratory viruses' epidemiology due to non-pharmaceutical interventions and possible viral interactions. This study investigates whether the circulation patterns of respiratory viruses have returned to pre-pandemic norms by comparing their peak timing and duration during the first three SARS-CoV-2 seasons to pre-pandemic times. METHODS: GISRS data from 194 countries (2014-2023) was analyzed for epidemic peak timing and duration, focusing on pre-pandemic and pandemic periods across both hemispheres and the intertropical belt...
April 16, 2024: International Journal of Infectious Diseases: IJID
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JOURNAL ARTICLE
Tatiana Kasinsky, Natalia Rosciano, Juliana A Vianna, Pablo Yorio, Leonardo Campagna
The genetic identification of evolutionary significant units and information on their connectivity can be used to design effective management and conservation plans for species of concern. Despite having high dispersal capacity, several seabird species show population structure due to both abiotic and biotic barriers to gene flow. The Kelp Gull is the most abundant species of gull in the southern hemisphere. In Argentina it reproduces in both marine and freshwater environments, with more than 100,000 breeding pairs following a metapopulation dynamic across 140 colonies in the Atlantic coast of Patagonia...
2024: PloS One
#35
JOURNAL ARTICLE
Manivannan Subramaniyan, John D Hughes, Tracy J Doty, William D S Killgore, Jaques Reifman
It is well established that individuals differ in their response to sleep loss. However, existing methods to predict an individual's sleep-loss phenotype are not scalable or involve effort-dependent neurobehavioural tests. To overcome these limitations, we sought to predict an individual's level of resilience or vulnerability to sleep loss using electroencephalographic (EEG) features obtained from routine night sleep. To this end, we retrospectively analysed five studies in which 96 healthy young adults (41 women) completed a laboratory baseline-sleep phase followed by a sleep-loss challenge...
April 18, 2024: Journal of Sleep Research
#36
Ankita Sachdev, Sourya Acharya, Harshita J, Shreyash Huse
The Dyke-Davidoff-Masson syndrome (DDMS) is an uncommon neurological disorder whose prevalence is not yet known. There have only been 21 adult manifestations of this rare brain disorder, out of around 100 cases previously documented. Diagnosis is challenging because of the complexity of radiological findings and clinical symptoms, which include ventricle dilation, hypertrophy of the cranial bones, increased pneumatization of the sinuses, and cerebral hemisphere atrophy. It can be inherited or acquired from infections, brain hemorrhage, and hypoxia during pregnancy...
March 2024: Curēus
#37
Marijne Vandebergh, Eliana Marisa Ramos, Nick Corriveau-Lecavalier, Vijay K Ramanan, John Kornak, Carly Mester, Tyler Kolander, Danielle Brushaber, Adam M Staffaroni, Daniel Geschwind, Amy Wolf, Kejal Kantarci, Tania F Gendron, Leonard Petrucelli, Marleen Van den Broeck, Sarah Wynants, Matthew C Baker, Sergi Borrego-Écija, Brian Appleby, Sami Barmada, Andrea Bozoki, David Clark, R Ryan Darby, Bradford C Dickerson, Kimiko Domoto-Reilly, Julie A Fields, Douglas R Galasko, Nupur Ghoshal, Neill Graff-Radford, Ian M Grant, Lawrence S Honig, Ging-Yuek Robin Hsiung, Edward D Huey, David Irwin, David S Knopman, Justin Y Kwan, Gabriel C Léger, Irene Litvan, Joseph C Masdeu, Mario F Mendez, Chiadi Onyike, Belen Pascual, Peter Pressman, Aaron Ritter, Erik D Roberson, Allison Snyder, Anna Campbell Sullivan, M Carmela Tartaglia, Dylan Wint, Hilary W Heuer, Leah K Forsberg, Adam L Boxer, Howard J Rosen, Bradley F Boeve, Rosa Rademakers
BACKGROUND AND OBJECTIVES: TMEM106B has been proposed as a modifier of disease risk in FTLD-TDP, particularly in GRN mutation carriers. Furthermore, TMEM106B has been investigated as a disease modifier in the context of healthy aging and across multiple neurodegenerative diseases. The objective of this study is to evaluate and compare the effect of TMEM106B on gray matter volume and cognition in each of the common genetic FTD groups and in sporadic FTD patients. METHODS: Participants were enrolled through the ARTFL/LEFFTDS Longitudinal Frontotemporal Lobar Degeneration (ALLFTD) study, which includes symptomatic and presymptomatic individuals with a pathogenic mutation in C9orf72, GRN, MAPT, VCP, TBK1, TARDBP, symptomatic non-mutation carriers, and non-carrier family controls...
April 5, 2024: medRxiv
#38
JOURNAL ARTICLE
Bronwyn A S Harkness, Gabriela Ibarguchi, Veronica F Poland, Vicki L Friesen
Understanding the forces that shape population genetic structure is fundamental both for understanding evolutionary trajectories and for conservation. Many factors can influence the geographic distribution of genetic variation, and the extent to which local populations differ can be especially difficult to predict in highly mobile organisms. For example, many species of seabirds are essentially panmictic, but some show strong structure. Pigeon Guillemots ( Cepphus columba ; Charadriiformes: Alcidae) breed in small colonies scattered along the North Pacific coastline and feed in shallow nearshore waters year-round...
April 2024: Ecology and Evolution
#39
JOURNAL ARTICLE
Anshuman Swain, Adam Woodhouse, William F Fagan, Andrew J Fraass, Christopher M Lowery
In palaeontological studies, groups with consistent ecological and morphological traits across a clade's history (functional groups)1 afford different perspectives on biodiversity dynamics than do species and genera2,3 , which are evolutionarily ephemeral. Here we analyse Triton, a global dataset of Cenozoic macroperforate planktonic foraminiferal occurrences4 , to contextualize changes in latitudinal equitability gradients1 , functional diversity, palaeolatitudinal specialization and community equitability...
April 17, 2024: Nature
#40
JOURNAL ARTICLE
Letícia Martins Birelo, Carlos Roberto Appoloni
Three paintings of Thomas Gainsborough (1727-1788), one of the most influential English portrait painters of the late 18th century, from the collection of the Museu de Arte de São Paulo (MASP) - "Francis Rawdon" (1783-1784), "Portrait of Mrs. John Bolton" (1770), and "Drinkstone Park" (1747) - were investigated using portable X-ray fluorescence (pXRF), employing a W tube anode and an XR-100CR detector. These artworks represent the only paintings by Thomas Gainsborough located in the southern hemisphere...
April 16, 2024: Applied Radiation and Isotopes
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