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Encoding of sensory information by p...

Tumer, Evren Can.

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Encoding of sensory information by patterns of neural spikes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Encoding of sensory information by patterns of neural spikes./
作者:	Tumer, Evren Can.
面頁冊數:	130 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-01, Section: B, page: 0105.
Contained By:	Dissertation Abstracts International65-01B.
標題:	Biology, Neuroscience. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3120449

Encoding of sensory information by patterns of neural spikes.
Tumer, Evren Can.

Encoding of sensory information by patterns of neural spikes. - 130 p.

Source: Dissertation Abstracts International, Volume: 65-01, Section: B, page: 0105.

Thesis (Ph.D.)--University of California, San Diego, 2004.

Some neurons communicate information to other neurons using short voltage pulses called "spikes". The shape and structure of these spikes is usually the same so the information is thought to be encoded in some aspect of the timing between the spikes. Recent research has shown that some sensory neurons can produce almost identical spike trains upon repeated presentations of a stimulus. This observation demonstrates that neurons can be reliable information channels and the neural code can be deterministic. Also the reproducibility may be evidence that the precise timing of the spikes is meaningful for the representation of information. The main focus of this dissertation is to uncover how information is encoded in the timing of consecutive spikes. First a method based on techniques used in the analysis of data from nonlinear dynamical systems is developed to reconstruct the input signal to a neuron using the timing of multiple consecutive spikes. Then experiments performed on a motion sensitive visual neuron in the fly which exhibits the spike reproducibility described above are presented. This system is used to probe the characteristics of the transformation which takes in information about analog stimuli from the animal's environment and converts it into a series of spikes. The results from these experiments reveal that the neuron may be insensitive to aspects of the stimulus that it was previously thought to be encoding. The last part of this dissertation attempts to reconcile these results with those observed previously by others.Subjects--Topical Terms:

1017680
Biology, Neuroscience.

Encoding of sensory information by patterns of neural spikes.
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245 1 0 $a Encoding of sensory information by patterns of neural spikes.
300 $a 130 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-01, Section: B, page: 0105.
500 $a Chair: Henry D. I. Abarbanel.
502 $a Thesis (Ph.D.)--University of California, San Diego, 2004.
520 $a Some neurons communicate information to other neurons using short voltage pulses called "spikes". The shape and structure of these spikes is usually the same so the information is thought to be encoded in some aspect of the timing between the spikes. Recent research has shown that some sensory neurons can produce almost identical spike trains upon repeated presentations of a stimulus. This observation demonstrates that neurons can be reliable information channels and the neural code can be deterministic. Also the reproducibility may be evidence that the precise timing of the spikes is meaningful for the representation of information. The main focus of this dissertation is to uncover how information is encoded in the timing of consecutive spikes. First a method based on techniques used in the analysis of data from nonlinear dynamical systems is developed to reconstruct the input signal to a neuron using the timing of multiple consecutive spikes. Then experiments performed on a motion sensitive visual neuron in the fly which exhibits the spike reproducibility described above are presented. This system is used to probe the characteristics of the transformation which takes in information about analog stimuli from the animal's environment and converts it into a series of spikes. The results from these experiments reveal that the neuron may be insensitive to aspects of the stimulus that it was previously thought to be encoding. The last part of this dissertation attempts to reconcile these results with those observed previously by others.
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790 1 0 $a Abarbanel, Henry D. I., $e advisor
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791 $a Ph.D.
792 $a 2004
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