Journal ArticleDOI
Subdivisions of hymenopteran mushroom body calyces by their afferent supply
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TLDR
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
Citations
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Book ChapterDOI
Plasticity of Synaptic Microcircuits in the Mushroom-Body Calyx of the Honey Bee
Wolfgang Rössler,Claudia Groh +1 more
TL;DR: This review focuses on characteristic modular synaptic complexes (microglomeruli, MG) in the honey bee MB calyx (CA), which have demonstrated a remarkable structural plasticity associated with postembryonic brood care, age, sensory experience, and stable long-term memory.
Journal ArticleDOI
Learning to navigate – how desert ants calibrate their compass systems
TL;DR: The ants perform stereotyped sequences of learning walks before switching from tasks inside the darkness of their nest, to foraging under bright sunlight, reflecting calibration and memory formation in the ants’ visual compass systems.
Posted ContentDOI
Visual input into the Drosophila melanogaster mushroom body
TL;DR: This study uses a range of anatomical and genetic techniques to identify two novel types of mushroom body input neuron that connect visual processing centers — namely the lobula and the posterior lateral protocerebrum — to the dorsal accessory calyx of the mushroom body.
Journal ArticleDOI
Neural pathways for the processing of alarm pheromone in the ant brain.
TL;DR: A class of PR neurons that receives input in all of these pheromone‐processing areas and terminates in a variety of premotor areas may participate in the control of pheromonal‐sensitized aggressive behavior, which is triggered by non‐pheromonal sensory stimuli associated with a potential enemy.
Journal ArticleDOI
Evolution and function of the insect mushroom bodies: contributions from comparative and model systems studies
Sarah M. Farris,Joseph Van Dyke +1 more
TL;DR: The insect mushroom bodies provide an exemplary case of the power of the Drosophila model system for elucidating the structure and function of a neural circuit, while comparative studies show that these circuits are evolutionarily malleable and capable of different functional roles in other insect species.
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The Insect Societies
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Journal ArticleDOI
Associative odor learning in Drosophila abolished by chemical ablation of mushroom bodies
JS de Belle,Martin Heisenberg +1 more
TL;DR: The results demonstrate that MBs mediate associative odor learning in flies, and that adult flies developing without MBs are unable to perform in a classical conditioning paradigm that tests associative learning of odor cues and electric shock.