3,889 Hits in 5.4 sec

Parallel coding schemes of whisker velocity in the rat's somatosensory system

Eran Lottem, Erez Gugig, Rony Azouz
2015 Journal of Neurophysiology  
velocity-dependent first spike latency of slowly adapting neurons.  ...  Whisker velocity is accurately and reliably coded in first-order neurons in parallel, by both the relative time interval between velocity-independent first spike latency of rapidly adapting neurons and  ...  DISCLOSURES No conflicts of interest, financial or otherwise, are declared by the author(s). AUTHOR CONTRIBUTIONS  ... 
doi:10.1152/jn.00485.2014 pmid:25552637 fatcat:xsibbvhymfavbjopwsejzvkicm

Efficient message passing scheduling for terminated LDPC convolutional codes

Michael Lentmaier, Maria Mellado Prenda, Gerhard P. Fettweis
2011 2011 IEEE International Symposium on Information Theory Proceedings  
The results of the analysis together with computer simulations for some (3,6)-regular codes confirm that sliding window decoding is an attractive practical solution for low-latency and low-complexity decoding  ...  Message passing schedules that reduce the decoding complexity of terminated LDPC convolutional code ensembles are analyzed.  ...  Due to the structure of the coupled ensemble, during the decoding process the remaining active nodes move from both ends of the protograph toward the center.  ... 
doi:10.1109/isit.2011.6033865 dblp:conf/isit/LentmaierPF11 fatcat:hijgf3hjofetpnofz522k6mihi

Single-trial variability in early visual neuromagnetic responses: an explorative study based on the regional activation contributing to the N70m peak

N.A. Laskaris, L.C. Liu, A.A. Ioannides
2003 NeuroImage  
We explored whether these patterns correspond to distinct response modes, which could characterize the evoked response better than the averaged signal and over an extended range of latencies around N70m  ...  A data-driven spatial filter was used to extract one of the many possible composite time courses of single-trial activity corresponding to the complex of N70m generators.  ...  Using a moving window, the within-groups cohesion of the ST-patterns morphology was quantified as a function of latency.  ... 
doi:10.1016/s1053-8119(03)00367-7 pmid:14568450 fatcat:nl4kkieqa5aidj2eq7e4x7e6uu

Intelligent Scene Recognition Based on Deep Learning

Sixian Wang, Shengshi Yao, Kai Niu, Chao Dong, Cheng Qin, Hongcheng Zhuang
2021 IEEE Access  
We present experiments on accuracy and resource usage and prove that our system realizes a latency-low and power-efficient scene recognition approach by trading off a reasonable performance loss (averaged  ...  A two-stage setting makes it robust to scenes with different duration and therefore reduces the latency of recognition greatly.  ...  A low-pass filter is commonly used to take the edge off the noise, like a Gaussian smoothing filter [2] , moving average filter [10] .  ... 
doi:10.1109/access.2021.3057075 fatcat:sy6jnwtxwreh5cz7s4jjgp2y6i

Spatiotemporal Neural Integration for Bistable Perception in a Response-Time Structure-From-Motion Task

Zhisong Wang, N.K. Logothetis, Hualou Liang
2009 IEEE Transactions on Biomedical Engineering  
Subsequent analysis of the temporal profile of neural population decoding in relation to RT revealed that the amplitude and latency of the decoding accuracy are highly correlated with the RT, thus indicating  ...  that the monkeys respond faster when the decoding accuracy is higher and has shorter latency.  ...  Here, a low threshold is used to ensure that the smoothed decoding accuracy curve for each group of each session can reach this threshold.  ... 
doi:10.1109/tbme.2009.2027332 pmid:19635689 fatcat:k5qeebr5d5d5nh4q5tmnvemw2a

Elementary events underlying voltage-dependent G-protein inhibition of N-type calcium channels

P.G. Patil, M. de Leon, R.R. Reed, S. Dubel, T.P. Snutch, D.T. Yue
1996 Biophysical Journal  
Voltage-dependent G-protein inhibition of N-type calcium channels reduces presynaptic calcium entry, sharply attenuating neurotransmitter release.  ...  The observed changes may reflect genuine complexity in G-protein action and/or the intricate interactions of multiple channels and receptors in neurons.  ...  The smooth curves are predicted ensemble average currents for simulated patch. Experimental ensemble average currents from Fig. 5 A are superimposed.  ... 
doi:10.1016/s0006-3495(96)79444-4 pmid:8913590 pmcid:PMC1233739 fatcat:hhmn66ebbfgtdatv37w3vr3c2q

Single-channel basis for the slow activation of the repolarizing cardiac potassium current,IKs

Daniel Werry, Jodene Eldstrom, Zhuren Wang, David Fedida
2013 Proceedings of the National Academy of Sciences of the United States of America  
Single-channel recordings from transiently transfected mouse ltk − cells confirm a channel that has long latency periods to opening (1.67 ± 0.073 s at +60 mV) but that flickers rapidly between multiple  ...  Fast closings and overt subconductance behavior of the wild-type I Ks channel required modification of existing Markov models to include these features of channel behavior. cardiac repolarization | potassium-channel  ...  This work was supported by grants from the Canadian Institutes of Health Research and the Heart and Stroke Foundation of British Columbia and Yukon (to D.F.).  ... 
doi:10.1073/pnas.1214875110 pmid:23431135 pmcid:PMC3600500 fatcat:cub2hcgtzzbshbix64e63fveem

Molecular transport and packing underlie increasing ribosome productivity in faster growing cells [article]

Akshay J. Maheshwari, Emma Gonzalez, Alp M. Sunol, Drew Endy, Roseanna N. Zia
2021 bioRxiv   pre-print
We predict that the Damkohler number, the ratio of transport latency to reaction latency, for translation elongation is ~4; physical transport of individual ternary complexes accounts for ~80% of elongation  ...  To investigate, we model both physical transport and chemical reactions among ensembles of individual molecules involved in translation elongation in Escherichia coli.  ...  Steve Andrews for his assistance with using Smoldyn; and Anton Jackson-Smith, Rolando Perez, and other members of the Endy and Zia labs for helpful conversations and feedback.  ... 
doi:10.1101/2021.10.27.466129 fatcat:4genoiktxrgltaswp5gdbkidxe

Contribution of Individual Retinal Ganglion Cell Responses to Velocity and Acceleration Encoding

Andreas Thiel, Martin Greschner, Christian W. Eurich, Josef Ammermüller, Jutta Kretzberg
2007 Journal of Neurophysiology  
We investigate the capability of turtle retinal ganglion cell (RGC) ensembles to simultaneously encode multiple aspects of visual motion: speed, direction, and acceleration of moving patterns.  ...  By dividing the entire ensemble of simultaneously recorded cells into one group of direction-sensitive cells and one group with symmetric tuning, we demonstrate that the population of direction-sensitive  ...  curves, using a k-means clustering algorithm.  ... 
doi:10.1152/jn.01342.2006 pmid:17596411 fatcat:c7mbv7ttlbd5vdvsi26mqvw3sy

Alterations in activation gating of single Shaker A-type potassium channels by the Sh5 mutation

WN Zagotta, RW Aldrich
1990 Journal of Neuroscience  
The G( L'J curve was determined by dividing I( J') curves like in Figure 11A also plots the peak G(v) data from the ensemble dependence of @ have been altered.  ...  A, The ShS whole-cell G( k') data (open symbols) from Figure 12 . 12 Fits of the (Smodified model to first latencies and ensemble averages from a S/P single-channel outside-out patch.  ... 
doi:10.1523/jneurosci.10-06-01799.1990 pmid:2355250 fatcat:s6yplssrsbaejdno4t2ipuw6ze

Efficient Discrimination of Temporal Patterns by Motion-Sensitive Neurons in Primate Visual Cortex

Giedrius T. Burac̆as, Anthony M. Zador, Michael R. DeWeese, Thomas D. Albright
1998 Neuron  
We used two methods to calculate information rates.  ...  We quantitate an average Although motion-sensitive neurons in macaque midneuronal discriminative power in terms of the informadle temporal (MT) area are conventionally charactertion conveyed by the spike  ...  The low firing rates in our data (12 spikes/s on average) allowed us to obtain video frame (net speed of 12Њ/s).  ... 
doi:10.1016/s0896-6273(00)80477-8 pmid:9620700 fatcat:cw3umf4q4bdnzigi3r6mxucryu

"Master" Neurons Induced by Operant Conditioning in Rat Motor Cortex during a Brain-Machine Interface Task

P.-J. Arduin, Y. Fregnac, D. E. Shulz, V. Ego-Stengel
2013 Journal of Neuroscience  
The firing rate of a single neuron was used to control the position of a one-dimensional actuator.  ...  Each time the firing rate crossed a predefined threshold, a water bottle moved toward the rat, until the cumulative displacement of the bottle allowed the animal to drink.  ...  time-to-rewards with the reconstructed ones using trial activity ( Fig. 2 A,B , magenta vs green curves).  ... 
doi:10.1523/jneurosci.2744-12.2013 pmid:23658171 pmcid:PMC6619624 fatcat:xc35b7plrjgnnftcblr373horu

Exploratory data analysis of evoked response single trials based on minimal spanning tree

Nikolaos A. Laskaris, Andreas A. Ioannides
2001 Clinical Neurophysiology  
Method: Magnetoencephalographic auditory evoked responses were used for demonstrating and validating the introduced framework.  ...  The core of this framework is the compact description of the input ST sample in a form of content-dependent ordered lists.  ...  First the latency of maximum positive de¯ection in the ensemble average is identi®ed and the sequence of p 101 timepoints around this latency is selected as the set of latencies of interest.  ... 
doi:10.1016/s1388-2457(00)00560-5 pmid:11275544 fatcat:ai3pxwrjlbbh3kf5pcfobltrmq

Trial-to-trial variability of cortical evoked responses: implications for the analysis of functional connectivity

Wilson A. Truccolo, Mingzhou Ding, Kevin H. Knuth, Richard Nakamura, Steven L. Bressler
2002 Clinical Neurophysiology  
In this paper, we demonstrate that more realistic models, incorporating amplitude and latency variability of the evoked response itself, can explain statistical properties of cortical potentials that have  ...  To further investigate the effects of trial-to-trial variability on the aforementioned statistical measures, a Bayesian inference technique is used to separate single-trial evoked responses from the ongoing  ...  Acknowledgements We gratefully acknowledge use of the Charles E. Schmidt College of Science computing facilities at FAU in carrying out this work.  ... 
doi:10.1016/s1388-2457(01)00739-8 pmid:11856626 fatcat:beoekqtz2jbenlt6oa5wssxtg4

Micro-Doppler Based Human-Robot Classification Using Ensemble and Deep Learning Approaches [article]

Sherif Abdulatif, Qian Wei, Fady Aziz, Bernhard Kleiner, Urs Schneider
2017 arXiv   pre-print
Different moving targets will have unique μ-D and μ-R signatures that can be used for target classification.  ...  DCNN shows a superior performance of 99% accuracy in identifying humans from robots on a single R-D map.  ...  The hypothesis of the entire ensemble can be acquired by unweighted averaging of the hypotheses of all K individual learners.  ... 
arXiv:1711.09177v2 fatcat:y7l6q7lthzelhm5bqyvhwyx34a
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