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https://hdl.handle.net/2440/64956
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Type: | Journal article |
Title: | Discrimination of features in natural scenes by a dragonfly neuron |
Author: | Wiederman, S. O'Carroll, D. |
Citation: | The Journal of Neuroscience, 2011; 31(19):7141-7144 |
Publisher: | Society for Neuroscience |
Issue Date: | 2011 |
ISSN: | 0270-6474 1529-2401 |
Statement of Responsibility: | Steven D. Wiederman and David C. O'Carroll |
Abstract: | Flying insects engage in spectacular high-speed pursuit of targets, requiring visual discrimination of moving objects against cluttered backgrounds. As a first step toward understanding the neural basis for this complex task, we used computational modeling of insect small target motion detector (STMD) neurons to predict responses to features within natural scenes and then compared this with responses recorded from an identified STMD neuron in the dragonfly brain (Hemicordulia tau). A surprising model prediction confirmed by our electrophysiological recordings is that even heavily cluttered scenes contain very few features that excite these neurons, due largely to their exquisite tuning for small features. We also show that very subtle manipulations of the image cause dramatic changes in the response of this neuron, because of the complex inhibitory and facilitatory interactions within the receptive field. |
Keywords: | Visual Pathways Neurons Animals Photic Stimulation Visual Perception Electrophysiology Models, Neurological Computer Simulation Male Insecta Discrimination, Psychological |
Rights: | Copyright © 2011 the authors. Authors grant JNeurosci a license to publish their work and copyright remains with the author. Material published from 2010 to 2014 is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License (CC-BY-NC-SA). |
DOI: | 10.1523/JNEUROSCI.0970-11.2011 |
Published version: | http://dx.doi.org/10.1523/jneurosci.0970-11.2011 |
Appears in Collections: | Aurora harvest Physiology publications |
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hdl_64956.pdf | Published version | 1.8 MB | Adobe PDF | View/Open |
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