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Neural dynamics of envelope coding.
Longtin A, Middleton JW, Cieniak J, Maler L. Longtin A, et al. Math Biosci. 2008 Jul-Aug;214(1-2):87-99. doi: 10.1016/j.mbs.2008.01.008. Epub 2008 Feb 14. Math Biosci. 2008. PMID: 18514744
The tuning of sensory neurons to the carrier frequency results in a high sensitivity to the amplitude modulations of the carrier. ...Novel results are also presented on a more biophysical model of the receptor population, showing that it can encode a narrowba …
The tuning of sensory neurons to the carrier frequency results in a high sensitivity to the amplitude modulations of the carrier. ... …
Bistability and the dynamics of periodically forced sensory neurons.
Longtin A, Bulsara A, Pierson D, Moss F. Longtin A, et al. Biol Cybern. 1994;70(6):569-78. doi: 10.1007/BF00198810. Biol Cybern. 1994. PMID: 8068770
This article describes a modeling study of neurons which skip a random number of cycles of the stimulus between firings over a large range of input intensities. This behavior was investigated using analog and digital simulations of the motion of a part …
This article describes a modeling study of neurons which skip a random number of cycles of the stimulus between firings over …
Encoding with bursting, subthreshold oscillations, and noise in mammalian cold receptors.
Longtin A, Hinzer K. Longtin A, et al. Neural Comput. 1996 Feb 15;8(2):215-55. doi: 10.1162/neco.1996.8.2.215. Neural Comput. 1996. PMID: 8581883 Review.
We propose a mechanism for the encoding process. It is based on Plant's ionic model of slow wave bursting, to which stochastic forcing is added. ...The skipping at higher temperatures is shown to necessitate an interaction between noise and a subthreshold endogenous …
We propose a mechanism for the encoding process. It is based on Plant's ionic model of slow wave bursting, to which stochastic forcin …
Spike train patterning and forecastability.
Longtin A, Racicot DM. Longtin A, et al. Biosystems. 1997;40(1-2):111-8. doi: 10.1016/0303-2647(96)01636-x. Biosystems. 1997. PMID: 8971202
Theories of neural coding rely on a knowledge of correlations between firing events. These correlations are also useful to validate biophysical models for the neural activity. We present a methodology for validating models based on the assessment of linear and non-l …
Theories of neural coding rely on a knowledge of correlations between firing events. These correlations are also useful to validate b …
Suprathreshold stochastic firing dynamics with memory in P-type electroreceptors.
Chacron MJ, Longtin A, St-Hilaire M, Maler L. Chacron MJ, et al. Among authors: longtin a. Phys Rev Lett. 2000 Aug 14;85(7):1576-9. doi: 10.1103/PhysRevLett.85.1576. Phys Rev Lett. 2000. PMID: 10970558
Weakly electric fish generate a periodic electric field as a carrier signal for active location and communication tasks. Highly sensitive P-type receptors on their surface fire in response to carrier amplitude modulations (AM's) in a noisy phase locked fashio …
Weakly electric fish generate a periodic electric field as a carrier signal for active location and communication tasks. Highl …
Subtractive and divisive inhibition: effect of voltage-dependent inhibitory conductances and noise.
Doiron B, Longtin A, Berman N, Maler L. Doiron B, et al. Among authors: longtin a. Neural Comput. 2001 Jan;13(1):227-48. doi: 10.1162/089976601300014691. Neural Comput. 2001. PMID: 11177434
The influence of voltage-dependent inhibitory conductances on firing rate versus input current (f-I) curves is studied using simulations from a new compartmental model of a pyramidal cell of the weakly electric fish Apteronotus leptorhynchus. ...A simple leak …
The influence of voltage-dependent inhibitory conductances on firing rate versus input current (f-I) curves is studied using simulations fro …
Negative interspike interval correlations increase the neuronal capacity for encoding time-dependent stimuli.
Chacron MJ, Longtin A, Maler L. Chacron MJ, et al. Among authors: longtin a. J Neurosci. 2001 Jul 15;21(14):5328-43. doi: 10.1523/JNEUROSCI.21-14-05328.2001. J Neurosci. 2001. PMID: 11438609 Free PMC article.
Furthermore, the gain in information transmission rate attributable to correlations exhibits a resonance as a function of stimulus bandwidth; the maximum occurs when the inverse of the cutoff frequency of the stimulus is of the order of the decay time constant of re …
Furthermore, the gain in information transmission rate attributable to correlations exhibits a resonance as a function of stim …
Model of gamma frequency burst discharge generated by conditional backpropagation.
Doiron B, Longtin A, Turner RW, Maler L. Doiron B, et al. Among authors: longtin a. J Neurophysiol. 2001 Oct;86(4):1523-45. doi: 10.1152/jn.2001.86.4.1523. J Neurophysiol. 2001. PMID: 11600618
We present a detailed multi-compartmental model of an ELL basilar pyramidal cell to simulate somatic and dendritic spike discharge and test the conditions necessary to produce a burst output. ...We find that a cumulative inactivation of potassium channels und …
We present a detailed multi-compartmental model of an ELL basilar pyramidal cell to simulate somatic and dendritic spike discharge an …
Two-category model of task allocation with application to ant societies.
Brandts WA, Longtin A, Trainor LE. Brandts WA, et al. Among authors: longtin a. Bull Math Biol. 2001 Nov;63(6):1125-61. doi: 10.1006/bulm.2001.0262. Bull Math Biol. 2001. PMID: 11732179
We also compute analytically the probability density of the population numbers, and show that perturbations in our model decay twice as fast as in a model with random switching dynamics. A subset of the interaction types between ants yields intrinsic stochastic asym …
We also compute analytically the probability density of the population numbers, and show that perturbations in our model decay twice as fast …
Ghostbursting: a novel neuronal burst mechanism.
Doiron B, Laing C, Longtin A, Maler L. Doiron B, et al. Among authors: longtin a. J Comput Neurosci. 2002 Jan-Feb;12(1):5-25. doi: 10.1023/a:1014921628797. J Comput Neurosci. 2002. PMID: 11932557
The burst mechanism involves a slowly changing interaction between the somatic and dendritic action potentials. Burst termination occurs when the trajectory of the system is reinjected in phase space near the "ghost" of a saddle-node bifurcation of fixed points. ... …
The burst mechanism involves a slowly changing interaction between the somatic and dendritic action potentials. Burst termination occ …
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