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3D cell tracking in a living organism has a crucial role in live cell image analysis. Cell tracking in C. elegans has two difficulties. First, cell migration in a consecutive frame is large since they move their head during scanning.…

计算机视觉与模式识别 · 计算机科学 2024-03-21 Kaito Shiku , Hiromitsu Shirai , Takeshi Ishihara , Ryoma Bise

We introduce a novel musculoskeletal model of a dog, procedurally generated from accurate 3D muscle meshes. Accompanying this model is a motion capture-based locomotion task compatible with a variety of control algorithms, as well as an…

机器人学 · 计算机科学 2025-07-01 Vittorio La Barbera , Steven Bohez , Leonard Hasenclever , Yuval Tassa , John R. Hutchinson

Transport of dense core vesicles (DCVs) in neurons is crucial for distributing molecules like neuropeptides and growth factors. We studied the experimental trajectories of dynein-driven directed movement of DCVs in the ALA neuron C. elegans…

亚细胞过程 · 定量生物学 2025-03-04 Anna Gavrilova , Nickolay Korabel , Victoria J. Allan , Sergei Fedotov

A quantitative understanding of how sensory signals are transformed into motor outputs places useful constraints on brain function and helps reveal the brain's underlying computations. We investigate how the nematode C. elegans responds to…

神经元与认知 · 定量生物学 2020-08-18 Mochi Liu , Anuj K Sharma , Joshua W Shaevitz , Andrew M Leifer

The influx of calcium ions into the dendritic spines through the N-metyl-D-aspartate (NMDA) channels is believed to be the primary trigger for various forms of synaptic plasticity. In this paper, the authors calculate analytically the mean…

生物物理 · 物理学 2009-11-10 Luk C. Yeung , Gastone C. Castellani , Harel Z. Shouval

Fluorescence Microcopy Calcium Imaging is a fundamental tool to in-vivo record and analyze large scale neuronal activities simultaneously at a single cell resolution. Automatic and precise detection of behaviorally relevant neuron activity…

计算机视觉与模式识别 · 计算机科学 2025-12-23 Ran Li , Pan Xiao , Kaushik Dutta , Youdong Guo

In this study, we adopted visual motion imagery, which is a more intuitive brain-computer interface (BCI) paradigm, for decoding the intuitive user intention. We developed a 3-dimensional BCI training platform and applied it to assist the…

信号处理 · 电气工程与系统科学 2020-05-19 Byoung-Hee Kwon , Ji-Hoon Jeong , Jeong-Hyun Cho , Seong-Whan Lee

Calcium imaging has become a powerful and popular technique to monitor the activity of large populations of neurons in vivo. However, for ethical considerations and despite recent technical developments, recordings are still constrained to…

神经元与认知 · 定量生物学 2023-02-07 Bryan M. Li , Theoklitos Amvrosiadis , Nathalie Rochefort , Arno Onken

Cyborg in the brain-machine interface field has attracted more attention in recent years. To control a creature via a machine called cyborg method, three stages are considerable: stimulation of neurons, neural response, and the behavioral…

生物物理 · 物理学 2019-05-01 Mohammad Jamali , Yousef Jamali , Mehdi Golshani

Kalman filtering has proven to be effective for estimating brain activity using EEG recordings. In particular, the introduced post hoc standardization step of the algorithm, inspired by the sLORETA time-invariant method, reduces the depth…

Understanding principles of neurolocomotion requires the synthesis of neural activity, sensory feedback, and biomechanics. The nematode \textit{C. elegans} is an ideal model organism for studying locomotion in an integrated neuromechanical…

神经元与认知 · 定量生物学 2021-06-08 Carter L. Johnson , Timothy J. Lewis , Robert D. Guy

We exploit the reduced space of C. elegans postures to develop a novel tracking algorithm which captures both simple shapes and also self-occluding coils, an important, yet unexplored, component of worm behavior. We apply our algorithm to…

定量方法 · 定量生物学 2016-11-01 Onno D Broekmans , Jarlath B Rodgers , William S Ryu , Greg J Stephens

Brain activity is characterized by brain-wide spatiotemporal patterns which emerge from synapse-mediated interactions between individual neurons. Calcium imaging provides access to in vivo recordings of whole-brain activity at single-neuron…

神经元与认知 · 定量生物学 2023-09-13 Richard E. Rosch , Dominic R. W. Burrows , Christopher W. Lynn , Arian Ashourvan

The small (1 mm) nematode $\textit{Caenorhabditis elegans}$ (Corsi [1], wormbook.org) has become widely used as a model organism; in particular, the $\textit{C. elegans}$ connectome has been completely mapped, and $\textit{C. elegans}$…

生物物理 · 物理学 2021-10-22 Anshul Singhvi , Harold M. Hastings , Jenny Magnes , Susannah G. Zhang

Coronary artery calcium (CAC) is a significant marker of atherosclerosis and cardiovascular events. In this work we present a system for the automatic quantification of calcium score in ECG-triggered non-contrast enhanced cardiac computed…

计算机视觉与模式识别 · 计算机科学 2017-10-10 G. Santini , D. Della Latta , N. Martini , G. Valvano , A. Gori , A. Ripoli , C. L. Susini , L. Landini , D. Chiappino

This paper reports on the use of a convolutional neural network (CNN) methodology to analyse fluorescence images of calcium-ion Coulomb crystals in the gas phase. A transfer-learning approach is adopted using the publicly available RESNET50…

Brain research has been driven by enquiry for principles of brain structure organization and its control mechanisms. The neuronal wiring map of C. elegans, the only complete connectome available till date, presents an incredible opportunity…

神经元与认知 · 定量生物学 2016-11-28 Rahul Badhwar , Ganesh Bagler

Organisms move through the world by changing their shape, and here we explore the mapping from shape space to movements in the nematode C. elegans as it crawls on a planar agar surface. We characterize the statistics of the trajectories…

神经元与认知 · 定量生物学 2016-01-05 Greg J Stephens , Bethany Johnson-Kerner , William Bialek , William S Ryu

Calcium imaging data promises to transform the field of neuroscience by making it possible to record from large populations of neurons simultaneously. However, determining the exact moment in time at which a neuron spikes, from a calcium…

统计方法学 · 统计学 2018-02-22 Sean Jewell , Toby Dylan Hocking , Paul Fearnhead , Daniela Witten