Gaze control in the blowfly Calliphora: a multisensory, two-stage integration process

Hengstenberg, R

doi:10.1016/1044-5765(91)90063-t

Cited by 86 publications

(103 citation statements)

References 32 publications

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“…The VS and HS cells of the visual system are more sensitive to comparatively slow rotations of the fly, whereas the halteres are more sensitive to faster rotations (Hengstenberg, 1991;Sherman and Dickinson, 2003). The haltere primary sensory neurons fire in phase with the fast haltere oscillations (Pringle, 1948;Fox and Daniel, 2008) whereas, over short time intervals, VS and HS cells respond to self-rotation with a sustained change in membrane potential (Hausen, 1982;Hengstenberg, 1982).…”

Section: Introductionmentioning

confidence: 99%

“…One experimentally amenable example of such sensor fusion is the gaze stabilization pathway of the fly. Like in vertebrates, in which neurons integrate both visual and vestibular inputs to estimate self-motion (Gu et al, 2008), flies monitor self-motions using several visual and mechanosensory systems (Hengstenberg, 1991). A subset of visual interneurons, the horizontal and vertical system (HS and VS) lobula plate tangential cells (LPTCs) respond to panoramic retinal image shifts or "optic flow fields" generated during rotations of the fly about different body axes (Hausen, 1993;Krapp, 2000;Egelhaaf et al, 2002;Taylor and Krapp, 2007;Elyada et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Integration of Visual and Haltere Inputs in Fly Neck Motor Neurons

Huston¹,

Krapp²

2009

J. Neurosci.

101

114

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Animals use information from multiple sensory organs to generate appropriate behavior. Exactly how these different sensory inputs are fused at the motor system is not well understood. Here we study how fly neck motor neurons integrate information from two well characterized sensory systems: visual information from the compound eye and gyroscopic information from the mechanosensory halteres. Extracellular recordings reveal that a subpopulation of neck motor neurons display "gating-like" behavior: they do not fire action potentials in response to visual stimuli alone but will do so if the halteres are coactivated. Intracellular recordings show that these motor neurons receive small, sustained subthreshold visual inputs in addition to larger inputs that are phase locked to haltere movements. Our results suggest that the nonlinear gating-like effect results from summation of these two inputs with the action potential threshold providing the nonlinearity. As a result of this summation, the sustained visual depolarization is transformed into a temporally structured train of action potentials synchronized to the haltere beating movements. This simple mechanism efficiently fuses two different sensory signals and may also explain the context-dependent effects of visual inputs on fly behavior.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nonlinear Integration of Visual and Haltere Inputs in Fly Neck Motor Neurons

Huston¹,

Krapp²

2009

J. Neurosci.

101

114

View full text Add to dashboard Cite

show abstract

“…On the other hand, auditory receptors of insects in general are usually restricted to the ipsilateral half of the ganglion (Boyan 1993(Boyan , 1998, perhaps facilitating precise localization of acoustic signals by a bilaterally separated information processing. The function of the chordotonal sense organ, however, is unknown (Hengstenberg 1991).…”

Section: (D) Chordotonal Origin Of the Dipteran Earsmentioning

confidence: 99%

Convergent evolution of insect hearing organs from a preadaptive structure

Lakes‐Harlan

Stölting

Stumpner

1999

Proc. R. Soc. Lond. B

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Flies of the taxon Emblemasomatini (Sarcophagidae: Diptera) independently evolved an ear with the same anatomy and location as the Ormiini (Tachinidae: Diptera). Both ears represent a ¢rst case of convergent evolution of homologous insect ears, which raises the question for a preadaptation. Physiological and anatomical data indicate a preadaptive-sound-insensitive, but vibration-sensitive scolopidial chordotonal organ in non-hearing £ies. As selective pressure for the evolutionary transformation from a vibration receiver into a sound receiver, fast and precise cues for the localization and detection of the sound producing hosts can be presumed.

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“…In the blowfly, panoramic and small-field visual stimuli elicit optomotor movements of the head and body that attempt to stabilize the visual input on the retina (Hengstenberg, 1984(Hengstenberg, , 1988(Hengstenberg, , 1991. The processing of optic flow is performed in the third visual neuropil, the lobula plate.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Integration of Binocular Optic Flow by DNOVS2, A Descending Neuron of the Fly

Wertz¹,

Borst²,

Haag³

2008

J. Neurosci.

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For visual orientation and course stabilization, flies rely heavily on the optic flow perceived by the animal during flight. The processing of optic flow is performed in motion-sensitive tangential cells of the lobula plate, which are well described with respect to their visual response properties and the connectivity among them. However, little is known about the postsynaptic descending neurons, which convey motion information to the motor circuits in the thoracic ganglion. Here we investigate the physiology and connectivity of an identified premotor descending neuron, called DNOVS2 (for descending neuron of the ocellar and vertical system). We find that DNOVS2 is tuned in a supralinear way to rotation around the longitudinal body axis. Experiments involving stimulation of the ipsilateral and the contralateral eye indicate that ipsilateral computation of motion information is modified nonlinearly by motion information from the contralateral eye. Performing double recordings of DNOVS2 and lobula plate tangential cells, we find that DNOVS2 is connected ipsilaterally to a subset of vertical-sensitive cells. From the contralateral eye, DNOVS2 receives input most likely from V2, a heterolateral spiking neuron. This specific neural circuit is sufficient for the tuning of DNOVS2, making it probably an important element in optomotor roll movements of the head and body around the fly's longitudinal axis.

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Gaze control in the blowfly Calliphora: a multisensory, two-stage integration process

Cited by 86 publications

References 32 publications

Nonlinear Integration of Visual and Haltere Inputs in Fly Neck Motor Neurons

Nonlinear Integration of Visual and Haltere Inputs in Fly Neck Motor Neurons

Convergent evolution of insect hearing organs from a preadaptive structure

Nonlinear Integration of Binocular Optic Flow by DNOVS2, A Descending Neuron of the Fly

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