Individual cells in genetically homogeneous populations have been found to express
different numbers of molecules of specific proteins. We investigated the origins of these�…

A model is presented for the subthreshold polarization of a neuron by an applied electric
field. It gives insight into how morphological features of a neuron affect its polarizability. The�…

We explore a computationally efficient method of simulating realistic networks of neurons
introduced by Knight, Manin, and Sirovich (1996) in which integrate-and-fire neurons are�…

We consider the problem of decomposing a signal into a linear combination of features,
each a continuously translated version of one of a small set of elementary features. Although�…

The responses of monkey retinal ganglion cells to sinusoidal stimuli of various temporal
frequencies were measured and analyzed at a number of mean light levels. Temporal�…

Plant development is remarkably plastic but how precisely can the plant customize its form to
specific environments? When the plant adjusts its development to different environments�…

Automatic identification of action potentials from one or more extracellular electrode
recordings is generally achieved by clustering similar segments of the measured voltage�…

Recently, we introduced a phototransduction model that was able to account for the
reproducibility of vertebrate rod single-photon responses (SPRs)(Hamer et al., 2003). The�…

Single-photon responses (SPRs) in vertebrate rods are considerably less variable than
expected if isomerized rhodopsin (R*) inactivated in a single, memoryless step, and no other�…

Among 631 substitutions present in 90 nurse shark immunoglobulin light chain somatic
mutants, 338 constitute 2–4 bp stretches of adjacent changes. An absence of mutations in�…