Advances in Electroencephalography and Brain Connectome DOI

Tak Lap Poon,

Mr Harkness,

Andrew W. McEvoy

et al.

IntechOpen eBooks, Journal Year: 2023, Volume and Issue: unknown

Published: Feb. 15, 2023

This book examines developments in neuroscience with an emphasis on electroencephalography (EEG) and the brain connectome. The chapters address such topics as practical use of EEG lab, a correlation neuroimaging, medical application EEG, connectome concepts surgical intervention including newly evolving stereotactic electroencephalography, brain–computer interfaces for neurorehabilitation.

Language: Английский

Advanced Neuroimaging Approaches to Pediatric Brain Tumors DOI Open Access
Rahul Nikam, Xuyi Yue, Gurcharanjeet Kaur

et al.

Cancers, Journal Year: 2022, Volume and Issue: 14(14), P. 3401 - 3401

Published: July 13, 2022

Central nervous system tumors are the most common pediatric solid tumors; they also lethal. Unlike adults, childhood brain mostly primary in origin and differ type, location molecular signature. Tumor characteristics (incidence, location, type) vary with age. Children present a variety of symptoms, making early accurate diagnosis challenging. Neuroimaging is key initial monitoring tumors. Conventional anatomic imaging approaches (computed tomography (CT) magnetic resonance (MRI)) useful for tumor detection but have limited utility differentiating types grades. Advanced MRI techniques (diffusion-weighed imaging, diffusion tensor functional MRI, arterial spin labeling perfusion MR spectroscopy, elastography) provide additional improved structural information. Combined positron emission (PET) single-photon CT (SPECT), advanced information on metabolism physiology through use radiotracer probes. Radiomics radiogenomics offer promising insight into prediction subtype, post-treatment response to treatment, prognostication. In this paper, brief review cancers, by provided comprehensive description including clinical applications that currently utilized assessment evaluation

Language: Английский

Citations

21

Altered functional brain connectivity, efficiency, and information flow associated with brain fog after mild to moderate COVID-19 infection DOI Creative Commons
Shelli R. Kesler, Oscar Y. Franco‐Rocha, Alexa De La Torre Schutz

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Sept. 27, 2024

Language: Английский

Citations

1

Brain volume loss after cranial irradiation: a controlled comparison study between photon vs proton radiotherapy for WHO grade 2–3 gliomas DOI
Melissa M Gardner, Sebastian Winter,

Franziska Stahl

et al.

Journal of Neuro-Oncology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 14, 2024

Language: Английский

Citations

1

Fiber Density and Structural Brain Connectome in Glioblastoma Are Correlated With Glioma Cell Infiltration DOI
Jia Yang, Xiaowei Zhang, Xinya Gao

et al.

Neurosurgery, Journal Year: 2023, Volume and Issue: 92(6), P. 1234 - 1242

Published: Feb. 6, 2023

Glioblastoma (GBM) preferred to infiltrate into white matter (WM) beyond the recognizable tumor margin.To investigate whether fiber density (FD) and structural brain connectome can provide meaningful information about WM destruction glioma cell infiltration.GBM cases were collected based on inclusion criteria, baseline preoperative MRI results obtained. GBM lesions automatically segmented necrosis, contrast-enhanced tumor, edema areas. We obtained FD map compute lnFD values in each subarea reconstructed obtain topological metrics subarea. also divided area a nonenhanced (NET) normal contralesional value area, computed NET ratio.Twenty-five included this retrospective study. The FD/lnFD (aCp, aLp, aEg, aEloc, ar) significantly correlated with subareas, which represented extent of infiltration. parameters ratio. In particular, was ratio (coefficient, 0.92). Therefore, larger indicates more severe infiltration suggests an extended resection for better clinical outcomes.The study new insight different consideration their application neuro-oncology.

Language: Английский

Citations

2

Altered functional brain connectivity, efficiency, and information flow associated with brain fog after mild to moderate COVID-19 infection DOI Creative Commons
Shelli R. Kesler,

Oscar Y. Franco Rocha,

Alexa De La Torre Schutz

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: Oct. 20, 2023

Abstract COVID-19 is associated with increased risk for cognitive decline but very little known regarding the neural mechanisms of this risk. We enrolled 49 adults (55% female, mean age = 30.7 +/- 8.7), 25 and 24 without a history infection. administered standardized tests function acquired brain connectivity data using MRI. The group demonstrated significantly lower (W 475, p < 0.001, effect size r 0.58) functional in multiple regions (mean t 3.47 0.36, 0.03, corrected, d 0.92 to 1.5). Hypo-connectivity these was inversely correlated subjective directly fatigue (p 0.05, corrected). These reduced local efficiency 0.026, corrected) altered effective may have widespread on connectome characterized by patterns information processing flow. This serve as an adaptation pathology SARS-CoV-2 wherein can continue functioning at near expected objective levels, patients experience lowered fog.

Language: Английский

Citations

2

Connectomic deep brain stimulators in Parkinson`s sub cortical functional zones DOI Open Access
Venkateshwarla Rama Raju

IP Indian Journal of Neurosciences, Journal Year: 2024, Volume and Issue: 10(1), P. 22 - 29

Published: April 15, 2024

Shaking palsy is a brain disease involving motor and non zones affecting circa 1 to 2%of humans&#62;60 years age. To date there has been no invention for curing this chronic stop its progression. But existing therapeutic procedures can offer symptomatic relief Parkinson patients. DBS most successful therapy the Parkinson`s yet depends on accuracy of electrode implantation location within anatomical subcortical neural-structures. This study examines likelihood net-work-based induced stimuli application connectomic in Parkinson`s. The subthalamic nucleus divided into3 sub zones, namely, limbic (anterior), associative (middle) (posterior) as well diffusion weighted imaging (D W I). surgical targets are tiny (few millimeters) good enough neuroanatomical-structures b r i n. STN (size:12×5×3mm3) lies nearby internal capsule, medial lemniscus, corticospinal tract, plus red-nucleus. Through optimal lead insertion over stimuli, flow electrons spread these adjoining sucortics, thereby developing dyskinesias ( ). With time, DW-MRI f-MRI used anatomical-structural functional connectivity advanced idiopathic Contrasting conventional lesion based stimulus hypothesis, novel net hypothesis advocated that exact circuits n modulate pathophysiological net-work, reinstate near tissue region, thus producing stabilization-of human-brain-connectome connectomes makes use circuit procedure instead lesion-based stimulus, transformed neuromodulation. Connectomes via be tailor made every enhance operation. It`s just sketch human-brain-connectivity (HMC) transversely compound longitudinal-scales. Yet, it won`t yield cell information cotacts with cells at level micro scale.

Language: Английский

Citations

0

Research progress on the mechanisms, assessment methods, and intervention strategies for glioma-related cognitive impairment DOI Open Access
Riffat Iqbal, Zeeshan Ashraf

Asia-Pacific Journal of Oncology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 11, 2024

Glioma-related cognitive dysfunction has emerged as a significant issue that affects the quality of life patients. This paper aims to review latest advancements in research on mechanisms, assessment methods, and intervention strategies for glioma-induced impairment. First, it explored potential mechanisms underlying glioma-related dysfunction, including influence tumor location, surgical interventions, radiotherapy/chemotherapy. The focus is recent discoveries areas such neuroinflammation, compromised neuroplasticity, alterations white matter integrity. Secondly, examines widely used tools, neuropsychological tests imaging techniques, assesses their suitability limitations glioma Finally, discusses applications pharmacological treatments, neurorehabilitation exercises, emerging technologies (such transcranial magnetic stimulation brain-computer interfaces) mitigating dysfunction. Drawing from current literature, this offers recommendations future directions, aiming provide valuable insights into clinical treatment efforts.

Language: Английский

Citations

0

Brain volume loss after cranial irradiation: a controlled comparison study between photon vs proton radiotherapy for WHO grade 2-3 gliomas DOI
Melissa M Gardner, Sebastian Winter,

Franziska Stahl

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Abstract Purpose Radiation therapy (RT) is an integral treatment component in patients with glioma but associated neurotoxicity. Proton RT (PRT), as compared photon (XRT), reduces excess radiation to nontarget tissue. We used a retrospective method evaluate brain imaging metrics of neurotoxicity after PRT and XRT for glioma. Methods analyzed volume change thirty-four WHO grade 2–3 gliomas treated either (n = 17) or 17). Both groups were carefully matched by demographic/clinical criteria assessed longitudinally two years post-radiotherapy. Brain was measured ventricular expansion the tumor free hemisphere (contralateral target) proxy indicator loss. further impact volumetric changes on cognition patients, who completed neuropsychological testing part outcome study. Results found significant increases contralesional both at post-RT (F(1, 31) 18.45, p < .000, partial η2 .373), greater observed (26.55%) vs. (12.03%) (M 12.03%, SD 16.26; F(1,31) 4.26, 0.048, 0.121). Although, there no group-level any cognitive test individual screening, working memory, processing speed visual memory tasks correlated Conclusion This study suggests progressive loss following cranial irradiation, severity vs PRT. Radiation-induced appears be measurable level. Prospective studies are warranted validate these findings their impacts long-term function quality life. An improved understanding structural functional consequences essential develop neuroprotective strategies.

Language: Английский

Citations

0

Investigation of neurophysiologic and functional connectivity changes following glioma resection using magnetoencephalography DOI Creative Commons
Nardin Samuel, Irene E. Harmsen,

Mandy Yi Rong Ding

et al.

Neuro-Oncology Advances, Journal Year: 2023, Volume and Issue: 5(1)

Published: Jan. 1, 2023

Abstract Background In patients with glioma, clinical manifestations of neural network disruption include behavioral changes, cognitive decline, and seizures. However, the extent recovery following surgery remains unclear. The aim this study was to characterize neurophysiologic functional connectivity changes glioma using magnetoencephalography (MEG). Methods Ten newly diagnosed intra-axial brain tumors undergoing surgical resection were enrolled in completed at least two MEG recordings (pre-operative immediate post-operative). An additional post-operative recording 6–8 weeks obtained for six patients. Resting-state from 28 healthy controls used network-based comparisons. data processing involved artifact suppression, high-pass filtering, source localization. Functional between parcellated regions estimated coherence values 116 virtual channels. Statistical analysis standard parametric tests. Results Distinct alterations spectral power tumor observed, three frequency bands affected across all subjects. Tumor location-related observed specific unique each patient. Recovery regional occurred resection, as determined by local normalization. Changes inter-regional mapped brain, comparable low mid gamma-associated noted four Conclusion Our findings provide a framework future studies examine other We demonstrate an intrinsic capacity regeneration setting. Further work should be aimed correlating individual patients’ outcomes.

Language: Английский

Citations

1

Interfering with CALCRL expression inhibits glioma proliferation, promotes apoptosis, and predicts prognosis in low-grade gliomas DOI Open Access

Shengcai Gu,

Lei Shu, Lv Zhou

et al.

Annals of Translational Medicine, Journal Year: 2022, Volume and Issue: 10(23), P. 1277 - 1277

Published: Dec. 1, 2022

CALCRL is involved in a variety of key biological processes, including cell proliferation, apoptosis, angiogenesis, and inflammation. However, the role glioma remains unknown. The purpose this study was to investigate effect differential expression on malignant progression its value prognosis.Sequencing data from normal tissues were downloaded Cancer Genome Atlas (TCGA) Genotype-Tissue Expression (GTEx) databases, statistically analyzed using bioinformatics tools corresponding R package. brain tissue different grades detected by pathological immunohistochemical staining clinical specimens. lines quantitative real-time polymerase chain reaction (qRT-PCR), U87 line with high selected construct knockdown model transfection short hairpin (shRNA). proliferation ability Celigo assay 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, clone formation level apoptosis flow cytometry.The significantly upregulated compared that tissue, especially low-grade (LGG) glioblastoma, correlated prognosis LGG. Clinical pathology immunohistochemistry showed related grade glioma, highest found World Health Organization (WHO) Ⅲ glioma. results qRT-PCR line. After expression, clonogenic cells decreased, rate increased.CALCRL highly expressed Interfering inhibits promotes thus has potential as biomarker therapeutic target for those LGGs.

Language: Английский

Citations

2