Search results for "Spike train"

showing 3 items of 13 documents

Harmony perception and regularity of spike trains in a simple auditory model

2013

A probabilistic approach for investigating the phenomena of dissonance and consonance in a simple auditory sensory model, composed by two sensory neurons and one interneuron, is presented. We calculated the interneuron’s firing statistics, that is the interspike interval statistics of the spike train at the output of the interneuron, for consonant and dissonant inputs in the presence of additional "noise", representing random signals from other, nearby neurons and from the environment. We find that blurry interspike interval distributions (ISIDs) characterize dissonant accords, while quite regular ISIDs characterize consonant accords. The informational entropy of the non-Markov spike train …

ConsonantInterneuronSpeech recognitionSpike trainmedia_common.quotation_subjectSensory systemConsonance and dissonanceSound perceptionSettore FIS/03 - Fisica Della Materiamedicine.anatomical_structureAuditory system consonant and dissonant accords environmental noise hidden Markov chain informational entropy regularityPerceptionmedicineAuditory systemMathematicsmedia_commonAIP Conference Proceedings
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Regularity of Spike Trains and Harmony Perception in a Model of the Auditory System

2011

Spike train regularity of the noisy neural auditory system model under the influence of two sinusoidal signals with different frequencies is investigated. For the increasing ratio m/n of the input signal frequencies (m, n are natural numbers) the linear growth of the regularity is found at the fixed difference (m - n). It is shown that the spike train regularity in the model is high for harmonious chords of input tones and low for dissonant ones.

Markov processeSpeech recognitionAcousticsSpike trainmedia_common.quotation_subjectModels NeurologicalGeneral Physics and AstronomyMarkov processNatural numberSignalSettore FIS/03 - Fisica Della Materiasymbols.namesakeDiscrimination PsychologicalHearingInterneuronsPerceptionmedicineAuditory systemMathematicsmedia_commonFluctuation phenomena random processes noise and Brownian motionQuantitative Biology::Neurons and CognitionSensor auditory systemBrainmedicine.anatomical_structuresymbolsInformation and communication theorySpike (software development)TrainPhysical Review Letters
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Burst analysis tool for developing neuronal networks exhibiting highly varying action potential dynamics

2012

In this paper we propose a firing statistics based neuronal network burst detection algorithm for neuronal networks exhibiting highly variable action potential dynamics. Electrical activity of neuronal networks is generally analyzed by the occurrences of spikes and bursts both in time and space. Commonly accepted analysis tools employ burst detection algorithms based on predefined criteria. However, maturing neuronal networks, such as those originating from human embryonic stem cells (hESCs), exhibit highly variable network structure and time-varying dynamics. To explore the developing burst/spike activities of such networks, we propose a burst detection algorithm which utilizes the firing …

purskeanalyysispike trainsQuantitative Biology::Neurons and CognitiontoimintapotentiaalipurskeetMEAmicroelectrode arrayaction potential burstsdeveloping neuronal networksihmisalkion kantasoluhuman embryonic stem cellssoluttoimintapotentiaaliryhmätnervous systemhESCsmikroelektordihilakehittyvät hermoverkotburst analysis
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