The responses of central octavolateralis cells to moving sources

Müller, Horst M.; Fleck, Antje; Bleckmann, Horst

doi:10.1007/bf00192313

Cited by 22 publications

(14 citation statements)

References 56 publications

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“…However, it became apparent that at least object direction can be coded because the broad correlation peak flipped from positive to negative and vice versa if object direction was altered. Interestingly, neurons in the torus semicircularis of the goldfish show only a directional sensitivity and no velocity sensitivity to a moving object (Müller et al, 1996). This is in accordance with our data and with the fact that the flow velocity changes rapidly if a moving object passes a fish.…”

Section: Moving Objectsupporting

confidence: 91%

See 1 more Smart Citation

Measuring Flow Velocity and Flow Direction by Spatial and Temporal Analysis of Flow Fluctuations

Chagnaud¹,

Brücker²,

Hofmann³

et al. 2008

J. Neurosci.

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If exposed to bulk water flow, fish lateral line afferents respond only to flow fluctuations (AC) and not to the steady (DC) component of the flow. Consequently, a single lateral line afferent can encode neither bulk flow direction nor velocity. It is possible, however, for a fish to obtain bulk flow information using multiple afferents that respond only to flow fluctuations. We show by means of particle image velocimetry that, if a flow contains fluctuations, these fluctuations propagate with the flow. A cross-correlation of water motion measured at an upstream point with that at a downstream point can then provide information about flow velocity and flow direction. In this study, we recorded from pairs of primary lateral line afferents while a fish was exposed to either bulk water flow, or to the water motion caused by a moving object. We confirm that lateral line afferents responded to the flow fluctuations and not to the DC component of the flow, and that responses of many fiber pairs were highly correlated, if they were time-shifted to correct for gross flow velocity and gross flow direction. To prove that a cross-correlation mechanism can be used to retrieve the information about gross flow velocity and direction, we measured the flow-induced bending motions of two flexible micropillars separated in a downstream direction. A cross-correlation of the bending motions of these micropillars did indeed produce an accurate estimate of the velocity vector along the direction of the micropillars.

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Section: Moving Objectsupporting

confidence: 91%

“…The fish was positioned just outside the orbit, tangential to its perimeter [cf. Müller et al (1996), their Fig. 1].…”

Section: Methodsmentioning

confidence: 99%

Measuring Flow Velocity and Flow Direction by Spatial and Temporal Analysis of Flow Fluctuations

Chagnaud¹,

Brücker²,

Hofmann³

et al. 2008

J. Neurosci.

Self Cite

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“…As distance increased, the response decayed as a power function of distance. Müller, Fleck & Bleckmann (1996) towed a rectangular object on a circular orbit at various speeds near a catfish and Mogdans & Bleckmann (1998) close to a goldfish, eliciting responses that increase with the speed of towing. The peripheral lateral line units of the goldfish responded with predictable patterns.…”

Section: Flow Reconstruction: Viscous Effectsmentioning

confidence: 99%

Biomimetic Survival Hydrodynamics and Flow Sensing

Triantafyllou

Weymouth

Miao

2016

Annu. Rev. Fluid Mech.

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The fluid mechanics employed by aquatic animals in their escape or attack maneuvers, what we call survival hydrodynamics, are fascinating because the recorded performance in animals is truly impressive. Such performance forces us to pose some basic questions on the underlying flow mechanisms that are not in use yet in engineered vehicles. A closely related issue is the ability of animals to sense the flow velocity and pressure field around them in order to detect and discriminate threats in environments where vision or other sensing is of limited or no use. We review work on animal flow sensing and actuation as a source of inspiration, and in order to formulate a number of basic problems and investigate the flow mechanisms that enable animals develop their remarkable performance. We describe some intriguing mechanisms of actuation and sensing.

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“…Moving object stimuli also revealed that certain central lateral line units are highly sensitive to the direction of object motion (Bleckmann and Zelick, 1993;Müller et al, 1996;Wojtenek et al, 1998).…”

mentioning

confidence: 99%

A hydrodynamic topographic map in the midbrain of goldfishCarassius auratus

Plachta

Hanke

Bleckmann

2003

Journal of Experimental Biology

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SUMMARY Sensory systems often consist of several parallel pathways. Within each pathway, sensory information may be processed in topographically arranged maps or in maps derived by neuronal computation. Parallel pathways have so far not been described in the central lateral line system of teleost fish at levels higher than the medulla, and evidence for midbrain lateral line maps in fish is still weak. We found two classes of units with different response patterns in the central lateral line nucleus in the torus semicircularis of the goldfish Carassius auratus. Units of one class responded to a passing sphere and to the wake caused by that sphere with excitation. Units of the second class also responded to the moving sphere. However, these units did not respond to the wake behind the sphere. Hydrodynamic information received by class two units was topographically organized in the torus semicircularis of goldfish in that anterior body areas projected to rostral midbrain and posterior body areas to caudal midbrain. Units that responded only to the passing sphere were on average located more ventrally in the lateral TS than the units that responded exclusively to a vibrating sphere.

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The responses of central octavolateralis cells to moving sources

Cited by 22 publications

References 56 publications

Measuring Flow Velocity and Flow Direction by Spatial and Temporal Analysis of Flow Fluctuations

Measuring Flow Velocity and Flow Direction by Spatial and Temporal Analysis of Flow Fluctuations

Biomimetic Survival Hydrodynamics and Flow Sensing

A hydrodynamic topographic map in the midbrain of goldfishCarassius auratus

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