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2008


A non-parametric {Bayesian} alternative to spike sorting
A non-parametric Bayesian alternative to spike sorting

Wood, F., Black, M. J.

J. Neuroscience Methods, 173(1):1–12, August 2008 (article)

Abstract
The analysis of extra-cellular neural recordings typically begins with careful spike sorting and all analysis of the data then rests on the correctness of the resulting spike trains. In many situations this is unproblematic as experimental and spike sorting procedures often focus on well isolated units. There is evidence in the literature, however, that errors in spike sorting can occur even with carefully collected and selected data. Additionally, chronically implanted electrodes and arrays with fixed electrodes cannot be easily adjusted to provide well isolated units. In these situations, multiple units may be recorded and the assignment of waveforms to units may be ambiguous. At the same time, analysis of such data may be both scientifically important and clinically relevant. In this paper we address this issue using a novel probabilistic model that accounts for several important sources of uncertainty and error in spike sorting. In lieu of sorting neural data to produce a single best spike train, we estimate a probabilistic model of spike trains given the observed data. We show how such a distribution over spike sortings can support standard neuroscientific questions while providing a representation of uncertainty in the analysis. As a representative illustration of the approach, we analyzed primary motor cortical tuning with respect to hand movement in data recorded with a chronic multi-electrode array in non-human primates.We found that the probabilistic analysis generally agrees with human sorters but suggests the presence of tuned units not detected by humans.

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pdf preprint pdf from publisher PubMed [BibTex]

2008


pdf preprint pdf from publisher PubMed [BibTex]


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Active tails enhance arboreal acrobatics in geckos

Jusufi, A., Goldman, D., Revzen, S., Full, R.

PNAS, 105(11):4215-4219, 2008 (article)

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link (url) [BibTex]

link (url) [BibTex]


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Size dependent motion of nanodroplets on chemical steps

Moosavi, A., Rauscher, M., Dietrich, S.

Journal of Chemical Physics, 129(4), 2008 (article)

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link (url) DOI [BibTex]

link (url) DOI [BibTex]


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Magnetization and susceptibility of ferrofluids

Szalai, I., Dietrich, S.

Journal of Physics: Condensed Matter, 20(20), 2008 (article)

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[BibTex]

[BibTex]


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Polymer nanofibers via nozzle-free centrifugal spinning

Weitz, R. T., Harnau, L., Rauschenbach, S., Burghard, M., Kern, K.

Nano Letters, 8, pages: 1187-1191, 2008 (article)

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[BibTex]

[BibTex]


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Colloids dragged through a polymer solution: experiment, theory, and simulation

Gutsche, C., Kremer, F., Krüger, M., Rauscher, M., Weeber, R., Harting, J.

Journal of Chemical Physics, 129(8), 2008 (article)

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link (url) DOI [BibTex]

link (url) DOI [BibTex]


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The non-equilibrium response of the critical Ising model: universal scaling properties and local scale invariance

Corberi, F., Gambassi, A., Lippiello, E., Zannetti, M.

Journal of Statistical Mechanics: Theory and Experiment, 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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The influence of non-locality on fluctuation effects for 3D short-ranged wetting

Parry, A. O., Romero-Enrique, J. M., Bernardino, N. R., Rascon, C.

Journal of Physics: Condensed Matter, 20(50), 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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Universal dependence on disorder of 2D randomly diluted and random-bond +/-J Ising models.

Hasenbusch, M., Parisen Toldin, F., Pelissetto, A., Vicari, E.

Physical Review E, 78(1), 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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Effect of contact angle hysteresis on the measurement of capillary forces

De Souza, E. J., Gao, L., McCarthy, T. J., Arzt, E., Crosby, A. J.

Langmuir, 24(4):1391-1396, 2008 (article)

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[BibTex]

[BibTex]


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Direct measurement of critical Casimir forces

Hertlein, C., Helden, L., Gambassi, A., Dietrich, S., Bechinger, C.

Nature, 451, pages: 172-175, 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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Effective Hamiltonian for fluid membranes in the presence of long-range forces

Dutka, F., Napiorkowski, M., Dietrich, S.

Physical Review E, 78(2), 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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Lock and key model system

König, P., Roth, R., Dietrich, S.

Europhysics Letters, 84(06), 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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Colloidal interactions at fluid interfaces

Oettel, M., Dietrich, S.

Langmuir, 24(4):1425-1441, 2008 (article)

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[BibTex]

[BibTex]


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Spinodal dewetting of thin films with large interfacial slip: implications from the dispersion relation

Rauscher, M., Blossey, R., Münch, A., Wagner, B.

Langmuir, 24(21):12290-12294, 2008 (article)

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link (url) DOI [BibTex]

link (url) DOI [BibTex]


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Multicritical Nishimori point in the phase diagram of the +/-J Ising model on a square lattice

Hasenbusch, M., Parisen Toldin, F., Pelissetto, A., Vicari, E.

Physical Review E, 77(5), 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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Stimuli-responsive particles: synthesis and characterization of dumbbell-shaped polyelectrolyte brush particles

Hoffmann, M., Lu, Y. S., Schrinner, M., Ballauff, M., Harnau, L.

Polymeric Materials: Science \& Engineering, 99, pages: 216-217, 2008 (article)

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[BibTex]

[BibTex]


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Dumbbell-shaped polyelectrolyte brushes studied by depolarized dynamic light scattering

Hoffmann, M., Lu, Y., Schrinner, M., Ballauff, M., Harnau, L.

Journal of Physical Chemistry B, 112, pages: 14843-14850, 2008 (article)

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[BibTex]

[BibTex]


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Stability of liquid ridges on chemical micro- and nanostripes

Mechkov, S., Rauscher, M., Dietrich, S.

Physical Review E, 77(6), 2008 (article)

Abstract
{10 pages}

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link (url) DOI [BibTex]

link (url) DOI [BibTex]


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Motion of nanodroplets near chemical heterogeneities

Moosavi, A., Rauscher, M., Dietrich, S.

Langmuir, 24(3):734-742, 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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Stability and interactions of nanocolloids at fluid interfaces: effects of capillary waves and line tensions

Lehle, H., Oettel, M.

Journal of Physics: Condensed Matter, 20(40), 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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Directed motion of proteins along tethered polyelectrolytes

Henzler, K., Rosenfeldt, S., Wittemann, A., Harnau, L., Finet, S., Narayanan, T., Ballauff, M.

Physical Review Letters, 100, 2008 (article)

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[BibTex]

[BibTex]


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Ellipsoidal particles at fluid interfaces

Lehle, H., Noruzifar, E., Oettel, M.

European Physical Journal E, 26(1-2):151-160, 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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Growth of di-indenoperylene single crystals on amino-functionalized SiO2 surfaces

Zhang, X. N., Barrena, E., de Oteyza, D. G., de Souza, E., Dosch, H.

Journal of Applied Physics, 104, 2008 (article)

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DOI [BibTex]

DOI [BibTex]


Neural control of computer cursor velocity by decoding motor cortical spiking activity in humans with tetraplegia
Neural control of computer cursor velocity by decoding motor cortical spiking activity in humans with tetraplegia

(J. Neural Engineering Highlights of 2008 Collection)

Kim, S., Simeral, J., Hochberg, L., Donoghue, J. P., Black, M. J.

J. Neural Engineering, 5, pages: 455–476, 2008 (article)

Abstract
Computer-mediated connections between human motor cortical neurons and assistive devices promise to improve or restore lost function in people with paralysis. Recently, a pilot clinical study of an intracortical neural interface system demonstrated that a tetraplegic human was able to obtain continuous two-dimensional control of a computer cursor using neural activity recorded from his motor cortex. This control, however, was not sufficiently accurate for reliable use in many common computer control tasks. Here, we studied several central design choices for such a system including the kinematic representation for cursor movement, the decoding method that translates neuronal ensemble spiking activity into a control signal and the cursor control task used during training for optimizing the parameters of the decoding method. In two tetraplegic participants, we found that controlling a cursor’s velocity resulted in more accurate closed-loop control than controlling its position directly and that cursor velocity control was achieved more rapidly than position control. Control quality was further improved over conventional linear filters by using a probabilistic method, the Kalman filter, to decode human motor cortical activity. Performance assessment based on standard metrics used for the evaluation of a wide range of pointing devices demonstrated significantly improved cursor control with velocity rather than position decoding.

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pdf preprint pdf from publisher [BibTex]

pdf preprint pdf from publisher [BibTex]


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Force balance of particles trapped at fluid interfaces

Dominguez, A., Oettel, M., Dietrich, S.

The Journal of Chemical Physics, 128(11), 2008 (article)

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[BibTex]

[BibTex]


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Water and ice in contact with octadecyl-trichlorosilane functionalized surfaces: a high resolution x-ray reflectivity study

Mezger, M., Schöder, S., Reichert, H., Schröder, H., Okasinski, J., Honkimäki, V., Ralston, J., Bilgram, J., Roth, R., Dosch, H.

Journal of Chemical Physics, 128, 2008 (article)

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[BibTex]

[BibTex]


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Moulding technique demonstrates the contribution of surface geometry to the super-hydrophobic properties of the surface of a water strider

Perez Goodwyn, P., de Souza, E., Fujisaki, K., Gorb, S.

Acta Biomaterialia, 4, pages: 766-770, 2008 (article)

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[BibTex]

[BibTex]


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Capillary forces between chemically different substrates

De Souza, E. J., Brinkmann, M., Mohrdieck, C., Crosby, A., Arzt, E.

Langmuir, 24, pages: 10161-10168, 2008 (article)

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[BibTex]

[BibTex]


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Multipole expansion of the electrostatic interaction between charged colloids at interfaces

Dominguez, A., Frydel, D., Oettel, M.

Physical Review E, 77(2), 2008 (article)

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[BibTex]

[BibTex]


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Structure and thermodynamics of platelet dispersions

Harnau, L.

Molecular Physics, 106, pages: 1975-2000, 2008 (article)

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[BibTex]

[BibTex]


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Wetting phenomena in nanofluidics

Rauscher, M., Dietrich, S.

Annual Review of Materials Research, 38, pages: 143-172, 2008 (article)

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link (url) DOI [BibTex]

link (url) DOI [BibTex]


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Spherocylindrical coacervate core micelles formed by a supramolecular coordination polymer and a diblock copolymer

Yan, Y., Harnau, L., Besseling, N. A. M., de Keizer, A., Ballauff, M., Rosenfeldt, S., Cohen Stuart, A.

Soft Matter, 4, pages: 2207-2212, 2008 (article)

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[BibTex]

[BibTex]


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The critical wetting saga: how to draw the correct conclusions

Parry, A. O., Rascon, C., Bernardino, N. R., Romero-Enrique, J. M.

Journal of Physics: Condensed Matter, 20(49), 2008 (article)

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DOI [BibTex]

DOI [BibTex]


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The short-time self-diffusion coefficient of a sphere in a suspension of rigid rods

Guzowski, J., Cichocki, B., Wajnryb, E., Abade, G.C.

The Journal of Chemical Physics, 128(9), 2008 (article)

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[BibTex]

[BibTex]


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Enhancement of capillary forces by multiple liquid bridges

De Souza, E. J., Brinkmann, M., Mohrdieck, C., Arzt, E.

Langmuir, 24(16):8813-8820, 2008 (article)

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[BibTex]

[BibTex]


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Bubbles, gating, and anesthetics in ion channels

Roth, R., Gillespie, D., Nonner, W., Eisenberg, R.E.

Biophysical Journal, 94(11):4282-4298, 2008 (article)

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[BibTex]

[BibTex]


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Generation and application of high power femtosecond pulses in the vibrational fingerprint region

Sugiharto, A. B., Johnson, C. M., De Aguiar, H. B., Alloatti, L., Roke, S.

Applied Physics B, 91, pages: 315-318, 2008 (article)

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[BibTex]

[BibTex]


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Relaxation phenomena at criticality

Gambassi, A.

European Physical Journal B, 64(3-4):379-386, 2008 (article)

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[BibTex]

[BibTex]


Brownian Warps for Non-Rigid Registration
Brownian Warps for Non-Rigid Registration

Mads Nielsen, Peter Johansen, Andrew Jackson, Benny Lautrup, Soren Hauberg

Journal of Mathematical Imaging and Vision, 31, pages: 221-231, Springer Netherlands, 2008 (article)

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Publishers site PDF [BibTex]

Publishers site PDF [BibTex]


 An Efficient Algorithm for Modelling Duration in Hidden Markov Models, with a Dramatic Application
An Efficient Algorithm for Modelling Duration in Hidden Markov Models, with a Dramatic Application

Soren Hauberg, Jakob Sloth

Journal of Mathematical Imaging and Vision, 31, pages: 165-170, Springer Netherlands, 2008 (article)

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Publishers site Paper site PDF [BibTex]

Publishers site Paper site PDF [BibTex]

2006


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Effective forces between colloids at interfaces induced by capillary wavelike fluctuations

Lehle, H., Oettel, M., Dietrich, S.

Europhysics Letters, 75(1):174-180, 2006 (article)

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[BibTex]

2006


[BibTex]


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Influence of voltage on the phase behavior of a zenithally bistable liquid crystal device

Harnau, L., Dietrich, S.

Europhysics Letters, 73, pages: 28-34, 2006 (article)

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[BibTex]

[BibTex]


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Lateral and normal forces between patterned substrates induced by nematic fluctuations

Karimi Pour Haddadan, F., Dietrich, S.

Physical Review E, 73, 2006 (article)

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[BibTex]

[BibTex]


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From pair correlations to pair interactions: an exact relation in one-dimensional systems

Hansen-Goos, H., Lutz, C., Bechinger, C., Roth, R.

Europhysics Letters, 74, pages: 8-14, 2006 (article)

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[BibTex]

[BibTex]


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Nonmonotonic fluctuation spectra of membranes pinned or tethered discretely to a substrate

Merath, R.-J., Seifert, U.

Physical Review E, 73, 2006 (article)

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[BibTex]

[BibTex]


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Thin-film flow influenced by thermal noise

Grün, G., Mecke, K., Rauscher, M.

Journal of Statistical Physics, 122(6):1261-1291, 2006 (article)

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[BibTex]

[BibTex]


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Spin-density-wave order in cuprates

De Prato, M., Pelissetto, A., Vicari, E.

Physical Review B, 74(14), 2006 (article)

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[BibTex]

[BibTex]


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Motion of nanodroplets near edges and wedges

Moosavi, A., Rauscher, M., Dietrich, S.

Physical Review Letters, 97(23), 2006 (article)

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[BibTex]

[BibTex]