Neural correlates of the optomotor response in the fly

Bishop, Lewis G.; Keehn, Daniel G.

doi:10.1007/bf00271512

Cited by 52 publications

(13 citation statements)

References 7 publications

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“…These anatomical findings corroborated earlier extracellular recordings which demonstrated that there are directionally selective motion detecting units (DSMDs) present in the lobula plate region which show a pronounced preference for patterns moved in the horizontal and vertical planes (Bishop and Keehn, 1967;Bishop et al, 1969;McCann and Dill, 1969;McCann and Foster, 1971;McCann, 1973). Moreover, from behavioural experiments it was concluded that in the fly there is a functional separation of the horizontal and vertical inputs to the movement detection systems which control optomotor behaviour (G~Stz, 1968(G~Stz, , 1972.…”

Section: Introductionsupporting

confidence: 89%

Anatomical and physiological properties of the vertical cells in the third optic ganglion ofPhaenicia sericata (Diptera, Calliphoridae)

Eckert

Bishop

1978

J. Comp. Physiol.

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Summary. Intracellular recording and dye injection (Procion Yellow) techniques were applied to a set of nine giant, homolateral cells of the lobula plate of dipterans (Phaenicia, Sarcophaga) -the ' big vertical cells ' (or V-cells) of Pierantoni (1974).Anatomical Findings. The V-cells can be divided into 4 distinctly different groups which, in principle, agree with the classification (though into 3 groups) given by Strausfeld (1976a). In each case, the cell body lies in the caudal cell body layer of the optic pedunculus with the cell axon extending at the caudal surface of the lobula plate. The axons run through the optic pedunculus and terminate in the ventrolateral part of the protocerebrum. The large bifurcated dendrites and their small dendritic branches form a fan which lies in a frontal plane perpendicular to the columnar arrangement of this ganglion and penetrate the whole dorso-ventral region of the lobula plate. The highest density of dendritic branches is found in the anterior part of the retino-topic projection. It decreases gradually towards the projection of the posterior retina in the medial lobula plate. The dendritic field widths (Fig. 9) extend approximately 60 degrees in the horizontal and 200 degrees in the vertical direction; thus, there is a considerable degree of overlap in the horizontal direction. The posterior Vcells V6 to V8 possess a more extended horizontal field width in the dorsal part of the eye. These anatomical findings were verified by physiological measurements of the receptive field widths.Physiological Findings. The anterior V-cells (V1 to V3) are directionally sensitive to vertical movement: upward and downward pattern motion causes hyperpolarizing and depolarizing DC-membrane potential shifts, respectively. The lateral and posterior V-cells (V4 to V8) exhibit an additional sensitivity to horizontal movement giving rise to depolarizing and hyperpolarizing DC-membrane potential shifts with progressive and regressive pattern motion, respectively (Fig. 14). The directional sensitivity of V9 is not known. All V-cells respond to monocular, ipsilateral stimulation only. In addition to their directional sensitivity to moving patterns they respond to light intensity changes with a strong increase in the fluctuations of the transmembrane potential (which is proportional to the logarithm of the intensity). The average DC-membrane potential changes only very slightly (+ 3 mV) to a hundredfold increase in light intensity. These graduated potentials are sometimes accompanied by small, rapid spike-like potentials. Regular action potentials have never been observed under natural conditions, but can be elicited by hyperpolarizing current injection. The ionic basis of the observed potential behaviour is discussed.On physiological and anatomical grounds, the Vcells are believed to be output elements of the lobula plate with connections to descending neurones of the ventral nerve cord (Strausfeld and Obermayer, 1976) and to heterolateral elements. The anatomical and physiological properties of...

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Section: Introductionsupporting

confidence: 89%

Anatomical and physiological properties of the vertical cells in the third optic ganglion ofPhaenicia sericata (Diptera, Calliphoridae)

Eckert

Bishop

1978

J. Comp. Physiol.

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“…Since the class II-I unit, discovered earlier in the fly visual system (Bishop et al 1967(Bishop et al , 1968, has been definitely identified as H I by means of intracellular staining (Hausen 1976), this neuron is the only individually identifiable DS motion-sensitive cell known in the animal world that can pride itself on having been consistently investigated for 20 years, thereby giving rise to an impressive body of data (see also Lillywhite and Dvorak 1981;Eriksson 1982;Srinivasan and Dvorak 1980;Srinivasan 1983;BUlthoff and Schmid 1983;Maddess 1986).…”

Section: The Correlation Model Of Motion Perceptionmentioning

confidence: 96%

“…3). The two bilaterally symmetrical H I cells appear to be involved in the control of optomotortorque responses (Bishop et al 1967;Eckert 1980;Hausen 1981). The two HI neurons exert mutual inhibition, a feature that makes each particularly sensitive to either clockwise or anticlockwise rotatory (yaw) motion of the visual environment, as experienced by the fly when it performs a turn (McCann and Foster 1971;Hausen 1984).…”

Section: The Correlation Model Of Motion Perceptionmentioning

confidence: 98%

Directionally Selective Motion Detection by Insect Neurons

Franceschini¹,

Riehle²,

Nestour³

1989

Facets of Vision

276

179

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“…New implications for the neural mechanisms of visuomotor reflexes For decades, visually mediated reflexes in insects have been used as behavioral assays to predict and examine structure-function relationships within the nervous system at both the cellular (Bishop and Keehn, 1967;Hassenstein and Reichardt, 1956) and molecular-genetic levels (Fischbach and Heisenberg, 1984;Götz, 1964a) presented here therefore initializes both a search for new physiological mechanisms and a reinterpretation of current advances. Most electrophysiological studies of visual processing in flies have focused on a group of 60 or so motion-sensitive cells in the lobula plate (Hausen, 1984(Hausen, , 1993.…”

Section: Model For the Spatial Summation Of Translational Flow Fieldsmentioning

confidence: 99%

Spatial organization of visuomotor reflexes inDrosophila

Tammero

Frye

Dickinson

2004

Journal of Experimental Biology

154

165

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SUMMARYIn most animals, the visual system plays a central role in locomotor guidance. Here, we examined the functional organization of visuomotor reflexes in the fruit fly, Drosophila, using an electronic flight simulator. Flies exhibit powerful avoidance responses to visual expansion centered laterally. The amplitude of these expansion responses is three times larger than those generated by image rotation. Avoidance of a laterally positioned focus of expansion emerges from an inversion of the optomotor response when motion is restricted to the rear visual hemisphere. Furthermore, motion restricted to rear quarter-fields elicits turning responses that are independent of the direction of image motion about the animal's yaw axis. The spatial heterogeneity of visuomotor responses explains a seemingly peculiar behavior in which flies robustly fixate the contracting pole of a translating flow field.

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Neural correlates of the optomotor response in the fly

Cited by 52 publications

References 7 publications

Anatomical and physiological properties of the vertical cells in the third optic ganglion ofPhaenicia sericata (Diptera, Calliphoridae)

Anatomical and physiological properties of the vertical cells in the third optic ganglion ofPhaenicia sericata (Diptera, Calliphoridae)

Directionally Selective Motion Detection by Insect Neurons

Spatial organization of visuomotor reflexes inDrosophila

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