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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

Anticipation of moving stimuli by the retina

Article Abstract:

Neural activity in the brain is evoked by a flash of light. There is a delay of 30-100 milliseconds due to slow process of visual transduction in photoreceptors. It is suggested that the visual cortex uses delayed visual data from the eye to determine the trajectory of a moving object. Such anticipation of moving stimuli is reported to begin in the retina. A moving bar was found to cause a moving wave of spiking activity in retinal ganglion cells. The population activity travelled closed to the leading edge of the moving bar.

Author: Meister, Markus, Brivanlou, Iman H., Berry, Michael J. II, Jordan, Thomas A.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
Neurology

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Segregation of object and background motion in the retina

Article Abstract:

Research reveals that in the visualization of detecting moving objects within a stationary scene a subset of retinal ganglion cells respond to motion under conditions of wider surroundings moving with a different trajectory. Data indicate that a retinal circuitry invokes pooling over nonlinear interneurons and that suppression by global image motion involves amacrine cells.

Author: Olveczky, Bence P., Baccus, Stephen A., Meister, Markus
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
Analysis, Evaluation, Physiological aspects, Influence, Neurons, Vision research, Motion, Images, Optical, Optical images

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Dynamics predictive coding by the retina

Article Abstract:

Retinal ganglion cells convey the visual image from the eye to the brain and generally encode local differences in space and changes in time rather than the raw image intensity. This can be seen as a strategy of predictive coding, adapted through evolution to the average image statistics of the natural environment.

Author: Baccus, Stephen A., Meister, Markus, Hosoya, Toshihiko
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
Science & research, Ganglion

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Subjects list: Research, Retina, United States
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