@article {4152, title = {Spike sorting in the frequency domain with overlap detection.}, year = {2003}, abstract = {

This paper deals with the problem of extracting the activity of individual neurons from multi-electrode recordings. Important aspects of this work are: 1) the sorting is done in two stages - a statistical model of the spikes from different cells is built and only then are occurrences of these spikes in the data detected by scanning through the original data, 2) the spike sorting is done in the frequency domain, 3) strict statistical tests are applied to determine if and how a spike should be classiffed, 4) the statistical model for detecting overlaping spike events is proposed, 5) slow dynamics of spike shapes are tracked during long experiments. Results from the application of these techniques to data collected from the escape response system of the American cockroach, Periplaneta americana, are presented.

}, author = {Rinberg, D and Bialek, W and Davidowitz, H and Tishby, N} } @article {4149, title = {Wind spectra and the response of the cercal system in the cockroach.}, journal = {Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology}, volume = {189}, year = {2003}, month = {2003 Dec}, pages = {867-76}, abstract = {

Experiments on the cercal wind-sensing system of the American cockroach, Periplaneta americana, showed that the firing rate of the interneurons coding wind information depends on the bandwidth of random noise wind stimuli. The firing rate was shown to increase with decreases in the stimulus bandwidth, and be independent of changes in the total power of the stimulus with constant spectral composition. A detailed analysis of ethologically relevant stimulus parameters is presented. A phenomenological model of these relationships and their relevance to wind-mediated cockroach behavior is proposed.

}, keywords = {Action Potentials, Afferent, Afferent Pathways, Animal, Animals, Behavior, Central Nervous System, Cockroaches, Escape Reaction, Ganglia, Interneurons, Invertebrate, Male, Mechanoreceptors, Models, Neurological, Neurons, Physical Stimulation, Touch, Wind}, issn = {0340-7594}, doi = {10.1007/s00359-003-0460-9}, author = {Rinberg, D and Davidowitz, H} } @article {4151, title = {Do cockroaches {\textquoteright}know{\textquoteright} about fluid dynamics?}, journal = {Nature}, volume = {405}, year = {2000}, month = {2000 Jun 15}, pages = {756}, keywords = {Animals, Biomechanics, Interneurons, Periplaneta, Sense Organs, Wind}, issn = {0028-0836}, doi = {10.1038/35015677}, author = {Rinberg, D and Davidowitz, H} } @article {2374, title = {Parametric generation of second sound by first sound in superfluid helium.}, journal = {Physical Review Letters}, volume = {76}, year = {1996}, month = {1996 Mar 18}, pages = {2105-8}, abstract = {

We report the experimental studies of a parametric excitation of a second sound (SS) by a first sound (FS) in a superfluid helium in a resonance cavity. The results on several topics in this system are presented: (i) The linear properties of the instability, namely, the threshold, its temperature and geometrical dependencies, and the spectra of SS just above the onset were measured. They were found to be in a good quantitative agreement with the theory. (ii) It was shown that the mechanism of SS amplitude saturation is due to the nonlinear attenuation of SS via three wave interactions between the SS waves. Strong low frequency amplitude fluctuations of SS above the threshold were observed. The spectra of these fluctuations had a universal shape with exponentially decaying tails. Furthermore, the spectral width grew continuously with the FS amplitude. The role of three and four wave interactions are discussed with respect to the nonlinear SS behavior. The first evidence of Gaussian statistics of the wave amplitudes for the parametrically generated wave ensemble was obtained. (iii) The experiments on simultaneous pumping of the FS and independent SS waves revealed new effects. Below the instability threshold, the SS phase conjugation as a result of three-wave interactions between the FS and SS waves was observed. Above the threshold two new effects were found: a giant amplification of the SS wave intensity and strong resonance oscillations of the SS wave amplitude as a function of the FS amplitude. Qualitative explanations of these effects are suggested.

}, issn = {1079-7114}, doi = {10.1523/JNEUROSCI.3613-08.2008}, author = {Rinberg, D and Cherepanov, V and Steinberg, V} }