The Lobula-Complex of the Fly: Structure, Function and Significance in Visual Behaviour

Hausen, Klaus

doi:10.1007/978-1-4613-2743-1_15

Cited by 378 publications

(309 citation statements)

References 93 publications

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“…In the present study, we tested in the well-investigated H1 and V1 tangential neurons (Hausen, 1984) whether visual input is required to develop their characteristic receptive-field organization. H1 and V1, rather than other tangential neurons, were chosen for this analysis because of the relative ease with which they can be recorded from extracellularly even for extended periods of time.…”

Section: Introductionmentioning

confidence: 99%

Early visual experience and the receptive-field organization of optic flow processing interneurons in the fly motion pathway

et al. 2001

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The distribution of local preferred directions and motion sensitivities within the receptive fields of so-called tangential neurons in the fly visual system was previously found to match optic flow fields as induced by certain self-motions. The complex receptive-field organization of the tangential neurons and the recent evidence showing that the orderly development of the fly's peripheral visual system depends on visual experience led us to investigate whether or not early visual input is required to establish the functional receptive-field properties of such tangential neurons. In electrophysiological investigations of two identified tangential neurons, it turned out that dark-hatched flies which were kept in complete darkness for 2 days develop basically the same receptive-field organization as flies which were raised under seasonal light0dark conditions and were free to move in their cages. We did not find any evidence that the development of the sophisticated receptive-field organization of tangential neurons depends on sensory experience. Instead, the input to the tangential neurons seems to be "hardwired" and the specificity of these cells to optic flow induced during self-motions of the animal may have evolved on a phylogenetical time scale.

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Section: Introductionmentioning

confidence: 99%

Early visual experience and the receptive-field organization of optic flow processing interneurons in the fly motion pathway

et al. 2001

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“…These so-called tangential cells (TCs) have extended dendrites on which they spatially integrate the outputs of local motion sensitive elements. As a result, the TCs respond to motion within large parts of the visual ®eld (review: Hausen 1984). Motion in the preferred direction leads to an excitation of the TCs, whereas motion in the opposite direction causes an inhibition.…”

Section: Introductioǹmentioning

confidence: 99%

Detection of object motion by a fly neuron during simulated flight

Kimmerle

Egelhaaf

2000

Journal of Comparative Physiology A: Sensory, Neural, and Behav

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“…Behavioral response components as expressed in free (Land and Collett 1974;Collett 1980a, b;Wehrhahn etal. 1982;Wagner 1986a, b) and tethered flight (Reichardt and Poggio 1976;Reichardt et al 1983;Reichardt 1986;tteisenberg and Wolf 1984;Wehrhahn 1985;Egelhaaf et al 1988) were studied, as well as the response properties of visual interneurons (Hausen 1984;Egelhaaf et al 1988;Hausen and Egelhaaf 1989). Moreover, there are various studies concentrating on motor and mechanical aspects of flight control in flies (for review see Nachtigall 1983).…”

Section: Introductionmentioning

confidence: 99%

“…Both cell types pool the output of large retinotopic arrays of local movement detectors and are assumed to acquire their different sensitivities to different global retinal motion patterns by specific interactions with other motion-sensitive large-field neurons (Reichardt etal. 1983;Hausen 1984;Egelhaaf 1985c;Hausen and Egelhaaf 1989). The HScells are specialized to evaluate large-field image displacements as are induced during rotatory selfmotion of the animal about its vertical axis.…”

Section: Introductionmentioning

confidence: 99%

Visual afferences to flight steering muscles controlling optomotor responses of the fly

Egelhaaf

1989

J. Comp. Physiol.

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Summary. In tethered flying house-flies (Musca domestica) visually induced turning reactions weremonitored under open-loop conditions simultaneously with the spike activity of four types of steering muscles (M.bl, M.b2, M.II, M.III1). Specific behavioral response components are attributed to the activity of particular muscles. Compensatory optomotor turning reactions to large-field image displacements mainly occur when the stimulus pattern oscillates at low frequencies. In contrast, turning responses towards objects are preferentially induced by motion of relatively small stimuli at high oscillation frequencies. The different steering muscles seem to be functionally specialized in that they contribute to the control of these behavioral responses in different ways. The muscles I1, IIIl and b2 are preferentially active during small-field motion at high oscillation frequencies. They are much less active during small-field motion at low oscillation frequencies and large-field motion at all oscillation frequencies which were tested. M.b2 is most extreme in this respect. These steering muscles thus mediate :mainly turns towards objects. In contrast, M.bl responds best during large-field motion at low oscillation frequencies and, thus, is appropriate to control compensatory optomotor responses. However, the activity of this muscle is also strongly modulated during small-field motion at high oscillation frequencies and, therefore, may be involved also in the control of turns towards objects. These functional specializations of the different steering muscles in mediating different behavioral ~response components are related to the properties of two parallel visual pathways that are selectively tuned to largefield and small-field motion, respectively.Abbreviations. FD (cell) figure detection (cell); HS (cell) horizontal (cell)

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The Lobula-Complex of the Fly: Structure, Function and Significance in Visual Behaviour

Cited by 378 publications

References 93 publications

Early visual experience and the receptive-field organization of optic flow processing interneurons in the fly motion pathway

Early visual experience and the receptive-field organization of optic flow processing interneurons in the fly motion pathway

Detection of object motion by a fly neuron during simulated flight

Visual afferences to flight steering muscles controlling optomotor responses of the fly

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