Temporal coding

Temporal coding

The temporal coding is a type of neural coding which relies on precise timing of action potentials or inter-spike intervals.Combined with traditional rate coding models, temporal coding can provide additional information with the same rate.There is no precise definition of temporal code. Actually almost any coding scheme that is not rate coding can be referred to as a temporal code.

Unlike rate coding, the temporal coding model tries to account for short-term stimuli producing a small number of spikes.For example, if a neuron is capable of firing at a maximum rate of 100 spikes per second, then a stimulus <10ms would likely elicit only a single spike. This model is especially important for sound localization, which occurs within the brain on the order of milliseconds.

The discovery of spike timing dependent plasticity, where synaptic efficacy is modulated by the precise timing of spikes, provides strong evidence that temporal codes are used for cortical information transmission.

It should not be confused with the coding of the temporal information.

ee also

*Sparse coding
*Independent-spike coding
*Correlation coding
*Population coding

References

* Dayan P, Abbott LF. "Theoretical Neuroscience: Computational and Mathematical Modeling of Neural Systems". Cambridge, Massachusetts: The MIT Press; 2001. ISBN 0-262-04199-5
* Rieke F, Warland D, de Ruyter van Steveninck R, Bialek W. "Spikes: Exploring the Neural Code". Cambridge, Massachusetts: The MIT Press; 1999. ISBN 0-262-68108-0
* Theunissen F, Miller JP. "Temporal Encoding in Nervous Systems: A Rigorous Definition". Journal of Computational Neuroscience, 2, 149—162; 1995.


Wikimedia Foundation. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • Neural coding — is a neuroscience related field concerned with how sensory and other information is represented in the brain by networks of neurons. The main goal of studying neural coding is to characterize the relationship between the stimulus and the… …   Wikipedia

  • Population coding — Population encoding is a means by which information about something is encoded in a group of neurons. In population encoding, each neuron has a distribution of responses over some set of inputs, and the responses of many neurons may be combined… …   Wikipedia

  • Rate coding — The rate coding model of neuronal firing communication states that as the intensity of a stimulus increases the frequency or rate of action potentials, or spike firing , increases. Rate coding is sometimes called frequency coding.This phenomenon… …   Wikipedia

  • Correlation coding — The correlation coding model of neuronal firing claims that correlations between action potentials, or spikes , within a spike train may carry additional information above and beyond the simple timing of the spikes. It has been theoretically… …   Wikipedia

  • Independent-spike coding — The independent spike coding model of neuronal firing claims that each individual action potential, or spike , is independent of each other spike within the spike train.Contrast this with correlation coding.ee also*Rate coding *Temporal coding… …   Wikipedia

  • Scalable Video Coding — (SVC) is the name given to an extension of the H.264/MPEG 4 AVC video compression standard. H.264/MPEG 4 AVC was developed jointly by ITU T and ISO/IEC JTC 1. These two groups created the Joint Video Team (JVT) to develop the H.264/MPEG 4 AVC… …   Wikipedia

  • Advanced Audio Coding — AAC redirects here. For other uses, see AAC (disambiguation). Advanced Audio Codings iTunes standard AAC file icon Filename extension .m4a, .m4b, .m4p, .m4v, .m4r, .3gp, .mp4, .aac Internet media type audio/aac, audio/aacp, au …   Wikipedia

  • Multiview Video Coding — (MVC), ( ISO / IEC 14496 10:2008 corrección 1), es una extensión de los estándares de compresión de vídeo H.264/MPEG 4 AVC o popularmente conocido como Advanced Video Coding, desarrollado gracias a los esfuerzos conjuntos de MPEG/VCEG, que… …   Wikipedia Español

  • Video Coding Layer — La capa de codificación de vídeo, o en inglés Video Coding Layer (VCL) es parte del estándar de video H.264/AVC y similar a MPEG 2 en lo que a su filosofía se refiere. Mezcla predicción temporal (se refiere al conjunto de frames que se suceden) y …   Wikipedia Español

  • Long non-coding RNA — Long noncoding RNAs (long ncRNAs) are generally considered (somewhat arbitrarily) as non protein coding transcripts longer than 200 nucleotides. This limit is due to practical considerations including the separation of RNAs in common experimental …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”