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Noise Correlations and Neural Coding

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Air date: Monday, March 12, 2012, 12:00:00 PM
Time displayed is Eastern Time, Washington DC Local
Views: Total views: 431 (27 Live, 404 On-demand)
Category: Neuroscience
Runtime: 01:00:24
Description: Neuroscience Seminar Series

Research in the Rieke lab focuses on sensory signal processing, particularly in cases where sensory systems perform at or near the limits imposed by physics. Photon counting in the visual system is a beautiful example. At its peak sensitivity, the performance of the visual system is limited more by the division of light into discrete photons than by biological noise or inefficiencies. This observation guides the lab's investigation of the underlying mechanisms. Some of the current questions in the lab:

• What are the limits to visual sensitivity imposed by noise in the rod and cone photoreceptors? How close does the retina come to realizing these limits?
• How does the retinal circuitry read out the photoreceptor signals? Are there specializations for signals from rod and cone photoreceptors?
• How does the retina adapt and maintain sensitivity when the mean or contrast of the light inputs change?

For more information go to http://neuroseries.info.nih.gov
NLM Title: Noise correlations and neural coding / Fred Rieke.
Author: Rieke, Fred.
National Institutes of Health (U.S.)
Publisher:
Abstract: (CIT): Neuroscience Seminar Series Research in the Rieke lab focuses on sensory signal processing, particularly in cases where sensory systems perform at or near the limits imposed by physics. Photon counting in the visual system is a beautiful example. At its peak sensitivity, the performance of the visual system is limited more by the division of light into discrete photons than by biological noise or inefficiencies. This observation guides the lab's investigation of the underlying mechanisms. Some of the current questions in the lab: . What are the limits to visual sensitivity imposed by noise in the rod and cone photoreceptors? How close does the retina come to realizing these limits? . How does the retinal circuitry read out the photoreceptor signals? Are there specializations for signals from rod and cone photoreceptors? How does the retina adapt and maintain sensitivity when the mean or contrast of the light inputs change?
Subjects: Models, Neurological
Neural Pathways--physiology
Retinal Rod Photoreceptor Cells--physiology
Sensory Thresholds--physiology
Publication Types: Lecture
Webcast
 
NLM Classification: WW 270
NLM ID: 101581477
CIT Live ID: 10980
Permanent link: https://videocast.nih.gov/watch=10980

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