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Our lab studies the neural circuitry in the retina that generates the representations of the visual world. The retina extracts about a dozen different abstractions, formed at different strata within the retina, and transmitted separately along the optic nerve. We are determining the structural and functional circuit components of these abstractions. One dominant component of this circuitry is "crossover inhibition" found at every stage of visual processing At early stages of visual processing the world is divided into neurons that signal increases, and others that signal decreases in contrast at each point in visual space. Subsequent to that division in activity, these two signal paths begin to interact, and they inhibit each other at every single stage of visual processing from retina to visual cortex. This fascinating "crossover inhibition" takes many forms....feedback, feed forward, feed across. It also serves many important signal processing functions including common mode rejection, non-linearity correction, drift compensation, and noise reduction. Our lab is studying the neural circuitry that mediates this crossover interaction in an attempt to learn the secrets embodied in this treasure trove of highly sophisticated biological technology.
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Frank S Werblin,Eric Y Chen,Janice Chou,Jeongsook Park,Greg Schwartz,Michael J Berry, J Neurophysiol, Cuijian Zhang, S B Rompani,Botond Roska,Maureen A Mccall,Christian Puller,
mag(2015)
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