• Publications
  • Influence
The halteres of the blowfly Calliphora
We quantitatively analysed compensatory head reactions of flies to imposed body rotations in yaw, pitch and roll and characterized the haltere as a sense organ for maintaining equilibrium. DuringExpand
The halteres of the blowfly Calliphora
  • G. Nalbach
  • Physics, Biology
  • Journal of Comparative Physiology A
  • 1 September 1993
TLDR
From these considerations it is concluded that Coriolis forces play the major role in detecting body rotations. Expand
Eyes, eye stalks and the visual world of semi-terrestrial crabs
TLDR
It is shown that elongated eye stalks and acute zones for vertical resolving power are specific adaptations to the problems of spatial vision in a flat environment and could enable animals to gain depth and size information monocularily from retinal position and retinal size alone. Expand
Strepsipteran forewings are haltere-like organs of equilibrium
TLDR
It is shown for the first time conclusively that the specialized forewings in male Strepsiptera play the same role as halteres in flies, similar to vestibular organs of vertebrates, crabs, and cephalopods. Expand
Extremely non-orthogonal axes in a sense organ for rotation: Behavioural analysis of the dipteran haltere system
  • G. Nalbach
  • Medicine, Physics
  • Neuroscience
  • 1 July 1994
TLDR
Comparison of intact and one-haltered flies demonstrates that for the head roll reaction the inputs from both halteres are summated, whereas for the pitch reaction the summated inputs are modified by bilateral inhibition, which results in uniform gains and axis fidelity for all stimulus directions in the case of the head reaction. Expand
Spatial Vision in a Flat World: Optical and Neural Adaptations in Arthropods
We review evidence to show that in several arthropod families eyes and supporting neural control systems are shaped according to the spatial layout of their environment Amphibious crabs that live atExpand
Visual control of eye-stalk orientation in crabs: vertical optokinetics, visual fixation of the horizon, and eye design
Summary1.Pitch and roll eye movements of three species of crabs (Heloecius cordiformis, Mictyris longicarpus, Pachygrapsus marmoratus) were recorded in response to visual stimuli.2.The ‘flat world’Expand
Distribution of optokinetic sensitivity over the eye of crabs: its relation to habitat and possible role in flow-field analysis
TLDR
In “flat world crabs”, moving their eyes only in response to motion above the horizon gives these crabs a way of avoiding the rotational component of the visual flow-field generated during locomotion. Expand
The gear change mechanism of the blowfly (Calliphora erythrocephala) in tethered flight
  • G. Nalbach
  • Physics
  • Journal of Comparative Physiology A
  • 1 May 1989
Summary1.The wing beat ofCalliphora was observed stroboscopically in tethered flight. Two synchronized video cameras filmed the macroscopic wing movements and the microscopic events in the wingExpand
...
1
2
...