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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References
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Structure and function of learning flights in bees and wasps
TL;DR: The consequences of the structure of learning flights for visual information processing are reviewed and how they may relate to the acquisition of a visual representation and the task of pinpointing the goal are discussed.
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Morphology and sensory modality of mushroom body extrinsic neurons in the brain of the cockroach, Periplaneta americana
TL;DR: The present results demonstrate that the cockroach mushroom body processes multimodal sensory information and that its neural arrangements contribute to a precise architecture consisting of discrete longitudinal and transverse subdivisions.
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Effects of experience and juvenile hormone on the organization of the mushroom bodies of honey bees
TL;DR: Analysis of the big back bees demonstrates that certain aspects of adult brain plasticity associated with foraging can be displayed by worker bees treated with methoprene independent of foraging experience, and suggests a potentially important role of visual stimulation, possibly interacting with juvenile hormone, as an organizer of the mushroom bodies.
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Learning walks and landmark guidance in wood ants (Formica rufa)
TL;DR: A behaviour pattern in wood ants which in some respects resembles and in other respects differs from the learning flights of bees and wasps is examined, using computer simulation, whether this difference can be explained by the prominence ants give to the matching of landmarks viewed in the frontal visual field.
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Olfactory control of behavior in moths: central processing of odor information and the functional significance of olfactory glomeruli
TL;DR: The King Solomon Lectures that occasioned this paper presented findings from studies in my laboratory on the olfactory neurobiology of mate-seeking behavior of the male sphinx moth Manduca sexta in response to the sex pheromone released by the conspecific female moth.