Retinally-generated saccadic suppression of a locust looming-detector neuron: Investigations using a robot locust
Authors: Santer, R.D., Stafford, R. and Rind, F.C.
Journal: Journal of the Royal Society Interface
Volume: 1
Issue: 1
Pages: 61-77
eISSN: 1742-5662
ISSN: 1742-5689
DOI: 10.1098/rsif.2004.0007
Abstract:A fundamental task performed by many visual systems is to distinguish apparent motion caused by eye movements from real motion occurring within the environment. During saccadic eye movements, this task is achieved by inhibitory signals of central and retinal origin that suppress the output of motion-detecting neurons. To investigate the retinally-generated component of this suppression, we used a computational model of a locust looming-detecting pathway that experiences saccadic suppression. This model received input from the camera of a mobile robot that performed simple saccade-like movements, allowing the model's response to simplified real stimuli to be tested. Retinally-generated saccadic suppression resulted from two inhibitory mechanisms within the looming-detector's input architecture. One mechanism fed inhibition forward through the network, inhibiting the looming-detector's initial response to movement. The second spread inhibition laterally within the network, suppressing the looming-detector's maintained response to movement. These mechanisms prevent a looming-detector model response to whole-field visual stimuli. In the locust, this mechanism of saccadic suppression may operate in addition to centrally-generated suppression. Because lateral inhibition is a common feature of early visual processing in many organisms, we discuss whether the mechanism of retinally-generated saccadic suppression found in the locust looming-detector model may also operate in these species. © 2004 The Royal Society.
Source: Scopus
Retinally-generated saccadic suppression of a locust looming-detector neuron: investigations using a robot locust.
Authors: Santer, R.D., Stafford, R. and Rind, F.C.
Journal: J R Soc Interface
Volume: 1
Issue: 1
Pages: 61-77
ISSN: 1742-5689
DOI: 10.1098/rsif.2004.0007
Abstract:A fundamental task performed by many visual systems is to distinguish apparent motion caused by eye movements from real motion occurring within the environment. During saccadic eye movements, this task is achieved by inhibitory signals of central and retinal origin that suppress the output of motion-detecting neurons. To investigate the retinally-generated component of this suppression, we used a computational model of a locust looming-detecting pathway that experiences saccadic suppression. This model received input from the camera of a mobile robot that performed simple saccade-like movements, allowing the model's response to simplified real stimuli to be tested. Retinally-generated saccadic suppression resulted from two inhibitory mechanisms within the looming-detector's input architecture. One mechanism fed inhibition forward through the network, inhibiting the looming-detector's initial response to movement. The second spread inhibition laterally within the network, suppressing the looming-detector's maintained response to movement. These mechanisms prevent a looming-detector model response to whole-field visual stimuli. In the locust, this mechanism of saccadic suppression may operate in addition to centrally-generated suppression. Because lateral inhibition is a common feature of early visual processing in many organisms, we discuss whether the mechanism of retinally-generated saccadic suppression found in the locust looming-detector model may also operate in these species.
Source: PubMed
Retinally-generated saccadic suppression of a locust looming-detector neuron: investigations using a robot locust
Authors: Santer, R.D., Stafford, R. and Rind, F.C.
Journal: JOURNAL OF THE ROYAL SOCIETY INTERFACE
Volume: 1
Issue: 1
Pages: 61-77
eISSN: 1742-5662
ISSN: 1742-5689
DOI: 10.1098/rsif.2004.0007
Source: Web of Science (Lite)
Retinally-generated saccadic suppression of a locust looming-detector neuron: investigations using a robot locust
Authors: Santer, R.D., Stafford, R. and Rind, F.C.
Journal: Journal of the Royal Society Interface
Volume: 1
Pages: 61-77
ISSN: 1742-5689
DOI: 10.1098/rsif.2004.0007
Source: Manual
Preferred by: Rick Stafford
Retinally-generated saccadic suppression of a locust looming-detector neuron: investigations using a robot locust.
Authors: Santer, R.D., Stafford, R. and Rind, F.C.
Journal: Journal of the Royal Society, Interface
Volume: 1
Issue: 1
Pages: 61-77
eISSN: 1742-5662
ISSN: 1742-5689
DOI: 10.1098/rsif.2004.0007
Abstract:A fundamental task performed by many visual systems is to distinguish apparent motion caused by eye movements from real motion occurring within the environment. During saccadic eye movements, this task is achieved by inhibitory signals of central and retinal origin that suppress the output of motion-detecting neurons. To investigate the retinally-generated component of this suppression, we used a computational model of a locust looming-detecting pathway that experiences saccadic suppression. This model received input from the camera of a mobile robot that performed simple saccade-like movements, allowing the model's response to simplified real stimuli to be tested. Retinally-generated saccadic suppression resulted from two inhibitory mechanisms within the looming-detector's input architecture. One mechanism fed inhibition forward through the network, inhibiting the looming-detector's initial response to movement. The second spread inhibition laterally within the network, suppressing the looming-detector's maintained response to movement. These mechanisms prevent a looming-detector model response to whole-field visual stimuli. In the locust, this mechanism of saccadic suppression may operate in addition to centrally-generated suppression. Because lateral inhibition is a common feature of early visual processing in many organisms, we discuss whether the mechanism of retinally-generated saccadic suppression found in the locust looming-detector model may also operate in these species.
Source: Europe PubMed Central