G. Lewen

Publications
Influence

Efficiency and ambiguity in an adaptive neural code

A. Fairhall, G. Lewen, W. Bialek, R. D. R. V. Steveninck
Computer Science, Medicine
Nature
23 August 2001

We examine the dynamics of a neural code in the context of stimuli whose statistical properties are themselves evolving dynamically. Expand

Reproducibility and Variability in Neural Spike Trains

R. de Ruyter van Steveninck, G. Lewen, S. Strong, R. Koberle, W. Bialek
Computer Science, Medicine
Science
21 March 1997

To provide information about dynamic sensory stimuli, the pattern of action potentials in spiking neurons must be variable. Expand

Physical Characterization of Pharmaceutical Solids

H. Brittain, Susan J. Bogdanowich, D. Bugay, Joseph Devincentis, G. Lewen, A. Newman
Engineering, Chemistry
Pharmaceutical Research
19 July 1995

A general review of the methods available for the physical characterization of pharmaceutical solids is presented. The techniques are classified as being on the molecular level (properties capable of… Expand

Neural coding of natural stimuli: information at sub-millisecond resolution

I. Nemenman, G. Lewen, W. Bialek, R. D. R. V. Steveninck
Computer Science
BMC Neuroscience
6 July 2007

We have found that under natural stimulus conditions the fly visual system generates spikes and interspike intervals with extraordinary temporal precision. Expand

Giant optical transmission of sub-wavelength apertures: physics and applications

T. Thio, H. Lezec, +4 authors R. Linke
Materials Science
23 May 2002

The transmission of light through an aperture in a metal film is extremely small when the aperture diameter is much smaller than the optical wavelength. But when the metal surface surrounding the… Expand

Neural coding of naturalistic motion stimuli.

G. Lewen, W. Bialek, R. de Ruyter van Steveninck
Computer Science, Physics
Network
27 March 2001

We study a wide-field motion-sensitive neuron in the visual system of the blowfly Calliphora vicina. Expand

Multiple Timescales of Adaptation in a Neural Code

A. Fairhall, G. Lewen, W. Bialek, R. D. R. V. Steveninck
Computer Science
NIPS
2000

We examine the timescales of adaptation in the context of dynamically modulated rapidly-varying stimuli, and demonstrate in the fly visual system that adaptation to statistical ensemble of the stimulus dynamically maximizes information transmission about the time-dependent stimulus. Expand

Changes in Material Properties Accompanying the National Formulary (NF) Identity Test for Microcrystalline Cellulose

H. Brittain, G. Lewen, A. Newman, K. Fiorelli, Susan J. Bogdanowich
Materials Science, Medicine
Pharmaceutical Research
2004

It has been found that the current NF identity test for microcrystalline cellulose is actually an assay of the response of the material to energy dissipation expended during the analysis procedure.… Expand

The origin of the A to B transition in DNA fibers and films

S. Lindsay, S. Lee, +5 authors A. Rupprecht
Chemistry, Medicine
Biopolymers
1 June 1988

We have studied the hydration of Na‐DNA and Li‐DNA fibers and films, measuring water contents, x‐ray fiber diffraction patterns, low‐frequency Raman spectra (below 100 cm−1), high‐frequency Raman… Expand

Neural Coding of Natural Stimuli: Information at Sub-Millisecond Resolution

I. Nemenman, G. Lewen, W. Bialek, Rob R. de Ruyter van Steveninck
Computer Science, Medicine
PLoS computational biology
1 March 2008

Sensory information about the outside world is encoded by neurons in sequences of discrete, identical pulses termed action potentials or spikes. Expand

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