optic flow
Neuronal processing of translational optic flow in the visual system of the shore crab Carcinus maenas
... translational optic flow and the extent to which they interact with each other, perhaps by electrical synapses, as do neurones with similar properties in flies (Haag and Borst, ...insect optic ...
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Optic flow based perception of two-dimensional trajectories and the effects of a single landmark.
... the optic flow stimulus? We investigated the visual perception and reconstruction of visually travelled two-dimensional trajectories from optic flow with and without a single ...showing ...
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Dynamic use of optic flow during pheromone tracking by the male silkmoth, Bombyx mori
... of optic flow input was determined by the behavioural state of surge and ...as optic flow stimuli only during surge, but not during ...constant optic flow); however, the ...
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Optic flow based perception of two-dimensional trajectories and the effects of a single landmark.
... Subjects report heading direction estimates that indicate that they perceive a curvilinear movement (Banks et al., 1996; Crowell, 1997; Cutting et al., 1997; Royden et al., 1992, 1994; Royden et al., 1994; van den Berg, ...
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The spatial frequency tuning of optic flow dependent behaviors in the bumblebee Bombus impatiens
... The relatively weak effects of spatial frequency on flight speed compared with the biases in lateral position may be due to the fact that motion signals from the ventral visual field remain constant across trials. Thus, ...
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Blowfly flight characteristics are shaped by environmental features and controlled by optic flow information
... intersaccadic optic flow generated in eye regions looking well in front of the fly, rather than in the lateral visual field, where the optic flow at least during forward flight tends to be ...
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Blowfly flight and optic flow II Head movements during flight
... through optic flow analysis (Egelhaaf and Borst, 1993; Krapp and Hengstenberg, 1996) and a mechanical system of gyroscopic sensors attached to the thorax, the halteres (Nalbach, 1993; for a recent overview, ...
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Drosophila fly straight by fixating objects in the face of expanding optic flow
... the optic flow created by self-motion with the images generated by prominent features in their ...rotating flow fields, their reactions to the more complex patterns of motion that occur as they ...
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Head movements and the optic flow generated during the learning flights of bumblebees
... This pivoting pattern of optic flow occurs during loops just before the brief period when bees face the nest (Fig. 5). It is difficult to learn much about the duration of nest-facing from recordings that ...
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Perception and reconstruction of two-dimensional, simulated ego-motion trajectories from optic flow.
... short optic flow presentations (Warren et ...the optic flow is ambiguous. For example, the flow that results from a linear translation concurrent with a horizontal eye or head or ...
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Bumblebees measure optic flow for position and speed control flexibly within the frontal visual field
... how optic flow may be used to control lateral position in insects is the optic flow regulator model (Serres et ...unilateral optic flow regulator that strives to maintain the ...
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Octopaminergic modulation of a fly visual motion-sensitive neuron during stimulation with naturalistic optic flow
... during stimulation with naturalistic optic flow. Apart from these changes, which are also reflected in corresponding up- and downward shifts of the response traces (Figure 1C), the responses appear to be ...
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Selective processing of all rotational and translational optic flow directions in the zebrafish pretectum and tectum
... Additional file 2: Figure S2. (related to Fig. 2). Analysis of stimulus phase pairs for horizontal, transversal and sagittal planes of motion. (A) Left: possible binocular combinations of motion in the horizontal plane ...
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Lateral optic flow does not influence distance estimation in the desert ant Cataglyphis fortis
... self-induced optic-flow parameters to gauge the distance they have ...self-induced optic flow (which decreases with increasing distance from the ...to optic cues had already been ...
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Goal seeking in honeybees: matching of optic flow snapshots?
... from optic flow? The potential relevance of motion cues is emphasised by characteristic flight manoeuvres that can be observed frequently near ...translatory optic flow field in the frontal ...
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Dynamics of optomotor responses in Drosophila to perturbations in optic flow
... Several other aspects of our experimental method impose limitations while also providing exciting avenues for future research. Nonlinearities contained in natural scenes composed of compound patterns of flow may ...
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The role of lateral optic flow cues in hawkmoth flight control
... of optic flow for the control of free flight has been assembled, much of our understanding is based on results from a relatively small number of insect species, belonging to either Apoidea or ...
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Modulation of walking speed by changing optic flow in persons with stroke
... It is also noteworthy that the down-regulation response observed in the subjects with stroke differs from the up- regulation response observed in subjects with Parkinson's disease, which manifests as an abnormally large ...
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Motion Localization with Optic Flow for Autonomous Robot Teams and Swarms
... We use the Mbed NXP LPC1768 microcontroller to interface with the Centeye sensor. This architecture is illustrated in Figure 2. Using a microcontroller al- lows the data to be processed with little expense and without ...
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A Real-Time Implementation of a Neuromorphic Optic Flow Algorithm
... Although we could use derivatives of arbitrarily high order, there is little to be gained by increasing the order of the derivatives indefinitely, since the Gaussian derivatives do not form an orthogonal set and the ...
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