Journal ArticleDOI
Subdivisions of hymenopteran mushroom body calyces by their afferent supply
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The data suggest that the many parallel channels of intrinsic neurons may each process different aspects of sensory input information within the mushroom body's calyx, which is particularly large in social Hymenoptera.Abstract:
The mushroom bodies are regions in the insect brain involved in processing complex multimodal information. They are composed of many parallel sets of intrinsic neurons that receive input from and transfer output to extrinsic neurons that connect the mushroom bodies with the surrounding neuropils. Mushroom bodies are particularly large in social Hymenoptera and are thought to be involved in the control of conspicuous orientation, learning, and memory capabilities of these insects. The present account compares the organization of sensory input to the mushroom body's calyx in different Hymenoptera. Tracer and conventional neuronal staining procedures reveal the following anatomic characteristics: The calyx comprises three subdivisions, the lip, collar, and basal ring. The lip receives antennal lobe afferents, and these olfactory input neurons can terminate in two or more segregated zones within the lip. The collar receives visual afferents that are bilateral with equal representation of both eyes in each calyx. Visual inputs provide two to three layers of processes in the collar subdivision. The basal ring is subdivided into two modality-specific zones, one receiving visual, the other antennal lobe input. Some overlap of modality exists between calycal subdivisions and within the basal ring, and the degree of segregation of sensory input within the calyx is species-specific. The data suggest that the many parallel channels of intrinsic neurons may each process different aspects of sensory input information.read more
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Neuronal assemblies of the Drosophila mushroom body.
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References
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Journal ArticleDOI
Central projections of the sensory hairs on the gemma of the ant Diacamma : substrate for behavioural modulation ?
TL;DR: The morphology of the gemma afferents is discussed with respect to their possible involvement in the behavioural changes associated with mutilation and it is implied that gemmae and wings are homologous structures.
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Control of Grasshopper Singing Behavior by the Brain: Responses to Electrical Stimulation1
TL;DR: The influence of the supraesophageal ganglion (brain) on the acoustic behavior of the acridid grasshopper Gomphocerus rufus L. was studied by means of local electrical stimulation.
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Topography of modular subunits in the mushroom bodies of the cockroach
TL;DR: In this paper, the authors examined serial sections of reduced silver preparations and found that each dark and light slab continues throughout the length of the pedunculus and the a and b lobes.
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Current source-density analysis in the mushroom bodies of the honeybee ( Apis mellifera carnica )
TL;DR: The CSD analysis shows that the inputs and outputs of the mushroom bodies involve multimodal synaptic interactions, whereas information processing in the intrinsic Kenyon-cells is limited to sensory inputs from the antenna.
Journal ArticleDOI
Erratum: Does interocular transfer occur in visual navigation by ants?
R. Wehner,M. Müller +1 more
TL;DR: The third sentence of the last column on page 229 should read "In honey bees, IOT has been inferred ..."