Search Results - "Barnett, Alex H."

A Fully Automated Approach to Spike Sorting by Chung, Jason E., Magland, Jeremy F., Barnett, Alex H., Tolosa, Vanessa M., Tooker, Angela C., Lee, Kye Y., Shah, Kedar G., Felix, Sarah H., Frank, Loren M., Greengard, Leslie F.

“…Understanding the detailed dynamics of neuronal networks will require the simultaneous measurement of spike trains from hundreds of neurons (or more)…”
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High-Density, Long-Lasting, and Multi-region Electrophysiological Recordings Using Polymer Electrode Arrays by Chung, Jason E., Joo, Hannah R., Fan, Jiang Lan, Liu, Daniel F., Barnett, Alex H., Chen, Supin, Geaghan-Breiner, Charlotte, Karlsson, Mattias P., Karlsson, Magnus, Lee, Kye Y., Liang, Hexin, Magland, Jeremy F., Pebbles, Jeanine A., Tooker, Angela C., Greengard, Leslie F., Tolosa, Vanessa M., Frank, Loren M.

“…The brain is a massive neuronal network, organized into anatomically distributed sub-circuits, with functionally relevant activity occurring at timescales…”
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A Bayesian approach to extracting free-energy profiles from cryo-electron microscopy experiments by Giraldo-Barreto, Julian, Ortiz, Sebastian, Thiede, Erik H., Palacio-Rodriguez, Karen, Carpenter, Bob, Barnett, Alex H., Cossio, Pilar

“…Cryo-electron microscopy (cryo-EM) extracts single-particle density projections of individual biomolecules. Although cryo-EM is widely used for 3D…”
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SpikeForest, reproducible web-facing ground-truth validation of automated neural spike sorters by Magland, Jeremy, Jun, James J, Lovero, Elizabeth, Morley, Alexander J, Hurwitz, Cole Lincoln, Buccino, Alessio Paolo, Garcia, Samuel, Barnett, Alex H

“…Spike sorting is a crucial step in electrophysiological studies of neuronal activity. While many spike sorting packages are available, there is little…”
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Robust fast direct integral equation solver for quasi-periodic scattering problems with a large number of layers by Cho, Min Hyung, Barnett, Alex H

“…We present a new boundary integral formulation for time-harmonic wave diffraction from two-dimensional structures with many layers of arbitrary periodic shape,…”
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Quadrature by fundamental solutions: kernel-independent layer potential evaluation for large collections of simple objects by Stein, David B., Barnett, Alex H.

“…Well-conditioned boundary integral methods for the solution of elliptic boundary value problems (BVPs) are powerful tools for static and dynamic physical…”
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Ensemble Reweighting Using Cryo-EM Particle Images by Tang, Wai Shing, Silva-Sánchez, David, Giraldo-Barreto, Julian, Carpenter, Bob, Hanson, Sonya M., Barnett, Alex H., Thiede, Erik H., Cossio, Pilar

“…Cryo-electron microscopy (cryo-EM) has recently become a leading method for obtaining high-resolution structures of biological macromolecules. However, cryo-EM…”
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A Unified Integral Equation Scheme for Doubly Periodic Laplace and Stokes Boundary Value Problems in Two Dimensions by Barnett, Alex H., Marple, Gary R., Veerapaneni, Shravan, Zhao, Lin

“…We present a spectrally accurate scheme to turn a boundary integral formulation for an elliptic PDE on a single unit cell geometry into one for the fully…”
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Accurate quadrature of nearly singular line integrals in two and three dimensions by singularity swapping by af Klinteberg, Ludvig, Barnett, Alex H.

“…The numerical method of Helsing and co-workers evaluates Laplace and related layer potentials generated by a panel (composite) quadrature on a curve,…”
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Validation of neural spike sorting algorithms without ground-truth information by Barnett, Alex H., Magland, Jeremy F., Greengard, Leslie F.

“…•We present per-neuron validation metrics for automatic spike sorting algorithms.•The metrics measure stability under perturbations consistent with those in…”
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High-order boundary integral equation solution of high frequency wave scattering from obstacles in an unbounded linearly stratified medium by Barnett, Alex H., Nelson, Bradley J., Mahoney, J. Matthew

“…We apply boundary integral equations for the first time to the two-dimensional scattering of time-harmonic waves from a smooth obstacle embedded in a…”
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Effective scattering coefficient of the cerebral spinal fluid in adult head models for diffuse optical imaging by Custo, Anna, Wells, 3rd, William M, Barnett, Alex H, Hillman, Elizabeth M C, Boas, David A

“…An efficient computation of the time-dependent forward solution for photon transport in a head model is a key capability for performing accurate inversion for…”
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Analytic steady-state space use patterns and rapid computations in mechanistic home range analysis by Barnett, Alex H., Moorcroft, Paul R.

“…Mechanistic home range models are important tools in modeling animal dynamics in spatially complex environments. We introduce a class of stochastic models for…”
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Quantum mushroom billiards by Barnett, Alex H, Betcke, Timo

“…We report the first large-scale statistical study of very high-lying eigenmodes (quantum states) of the mushroom billiard proposed by L. A. Bunimovich [Chaos…”
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Aliasing error of the exp⁡(β1−z2) kernel in the nonuniform fast Fourier transform by Barnett, Alex H.

“…The most popular algorithm for the nonuniform fast Fourier transform (NUFFT) uses the dilation of a kernel ϕ to spread (or interpolate) between given…”
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A fast numerical method for time-resolved photon diffusion in general stratified turbid media by Barnett, Alex H.

“…Efficient forward models of photon migration in complex geometries are important for noninvasive imaging of tissue in vivo with diffuse optical tomography…”
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Efficient numerical solution of acoustic scattering from doubly-periodic arrays of axisymmetric objects by Liu, Yuxiang, Barnett, Alex H.

“…We present a high-order accurate boundary-based solver for three-dimensional (3D) frequency-domain scattering from a doubly-periodic grating of smooth…”
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Trapped acoustic waves and raindrops: High-order accurate integral equation method for localized excitation of a periodic staircase by Agocs, Fruzsina J., Barnett, Alex H.

“…We present a high-order boundary integral equation (BIE) method for the frequency-domain acoustic scattering of a point source by a singly-periodic, infinite,…”
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cuFINUFFT: a load-balanced GPU library for general-purpose nonuniform FFTs by Shih, Yu-hsuan, Wright, Garrett, Anden, Joakim, Blaschke, Johannes, Barnett, Alex H.

“…Nonuniform fast Fourier transforms dominate the computational cost in many applications including image reconstruction and signal processing. We thus present a…”
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A High‐Order Integral Equation‐Based Solver for the Time‐Dependent Schrödinger Equation by Kaye, Jason, Barnett, Alex, Greengard, Leslie

“…We introduce a numerical method for the solution of the time‐dependent Schrödinger equation with a smooth potential, based on its reformulation as a Volterra…”
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