Speed tuning in elementary motion detectors of the correlation type
نویسندگان
چکیده
منابع مشابه
Direct Measurement of Correlation Responses in Drosophila Elementary Motion Detectors Reveals Fast Timescale Tuning
Animals estimate visual motion by integrating light intensity information over time and space. The integration requires nonlinear processing, which makes motion estimation circuitry sensitive to specific spatiotemporal correlations that signify visual motion. Classical models of motion estimation weight these correlations to produce direction-selective signals. However, the correlational algori...
متن کاملElementary motion detectors
A quick guide to the elementary motion detector- a model of how a simple neural circuit can detect visual motion, developed from work on insect vision but which seems also to be relevant to vertebrate visual systems.
متن کاملCorrelation versus gradient type motion detectors: the pros and cons.
Visual motion contains a wealth of information about self-motion as well as the three-dimensional structure of the environment. Therefore, it is of utmost importance for any organism with eyes. However, visual motion information is not explicitly represented at the photoreceptor level, but rather has to be computed by the nervous system from the changing retinal images as one of the first proce...
متن کاملSpeed tuning of motion segmentation and discrimination
Motion transparency requires that the visual system distinguish different motion vectors and selectively integrate similar motion vectors over space into the perception of multiple surfaces moving through or over each other. Using large-field (7 degrees x 7 degrees) displays containing two populations of random-dots moving in the same (horizontal) direction but at different speeds, we examined ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biological Cybernetics
سال: 1999
ISSN: 0340-1200,1432-0770
DOI: 10.1007/s004220050509