Response properties and receptive field organization of collision-sensitive neurons in the optic tectum of bullfrog, Rana catesbeiana.

Neuroscience Bulletin
Hong-Jian Kang, Xiao-Hong Li

Abstract

Many studies have reported that animals will display collision avoidance behavior when the size of retinal image of an object reaches a threshold. The present study aimed to investigate the neural correlates underlying the frog collision avoidance behavior. Different types of visual stimuli simulating the retinal image of an approaching or a recessing object were generated by a computer and presented to the right eye of frog. A multielectrode array was used to examine the activity of collision-sensitive neurons, and single electrode recordings were employed to quantify visual parameter(s) of the frog collision-sensitive neurons. The multielectrode array revealed that 40 neurons in the optic tectum showed selective responsiveness to objects approaching on a direct collision course. The response profiles of these collision-sensitive neurons were similar to those of lobula giant movement detector (LGMD) in the locust or to those of neurons in the pigeon. However, the receptive field (RF) size of the frog neurons [(18.5+/-3.8) degrees, n=33)] was smaller than those of collision-sensitive neurons of the locust and the pigeon. Multielectrode recordings also showed that the collision-sensitive neurons were activated only when the focu...Continue Reading

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Citations

May 13, 2014·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Indika Benaragama, John R Gray
Jul 6, 2014·The European Journal of Neuroscience·Arseny S KhakhalinCarlos D Aizenman
Oct 7, 2016·Current Opinion in Neurobiology·Martin Y Peek, Gwyneth M Card
May 7, 2011·Brain, Behavior and Evolution·Yong-Jun LiuBing Li
Apr 8, 2020·Annual Review of Neuroscience·Tiago Branco, Peter Redgrave
Dec 10, 2016·Frontiers in Neural Circuits·Eric V JangArseny S Khakhalin

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