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Simultaneous Long-term Recordings at Two Neuronal Processing Stages in Behaving Honeybees
13:55

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Published on: July 21, 2014

Vibration-processing interneurons in the honeybee brain.

Hiroyuki Ai1

  • 1Division of Biology, Department of Earth System Science, Fukuoka University Fukuoka, Japan.

Frontiers in Systems Neuroscience
|February 5, 2010
PubMed
Summary
This summary is machine-generated.

Honeybee Johnston's organ (JO) afferents project to distinct brain regions for differential vibration processing. Two parallel pathways, via the dorsal lobe-dorsal subesophageal ganglion and posterior protocerebral lobe, were identified for vibratory signals.

Keywords:
auditionbrainhoneybee standard brain (HSB)integrationolfactionparallel processingwaggle dance

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Published on: December 12, 2012

Area of Science:

  • Neuroscience
  • Sensory Biology
  • Insect Physiology

Background:

  • The Johnston's organ (JO) in honeybees detects vibratory signals.
  • JO afferents project to multiple brain regions, including the dorsal lobe-dorsal subesophageal ganglion (DL-dSEG) and posterior protocerebral lobe (PPL).
  • Differential processing of vibratory information is suggested by these distinct projection targets.

Purpose of the Study:

  • To investigate the morphological and physiological characteristics of interneurons in the DL-dSEG and PPL that receive input from the JO.
  • To elucidate the neural pathways involved in processing vibratory signals detected by the honeybee JO.
  • To map the spatial relationships between JO afferents and identified interneurons within the honeybee brain.

Main Methods:

  • Intracellular recording and staining techniques were employed to study interneuron morphology and physiology.
  • Honeybee Standard Brain was used as a reference for anatomical mapping.
  • Morphological data of interneurons and JO afferents were integrated into the standard brain for spatial analysis.

Main Results:

  • Two types of interneurons (DL-Int-1 and DL-Int-2) in the DL-dSEG respond to JO vibratory stimulation with various patterns (excitatory/inhibitory).
  • A third interneuron (PPL-D-1) in the PPL responds to simultaneous vibratory and olfactory stimulation.
  • The study identified at least two parallel processing pathways for vibratory signals originating from the JO.
  • Visualization revealed distinct putative synaptic regions between JO afferents and DL interneurons.

Conclusions:

  • Honeybee vibratory signal processing involves parallel pathways through the DL-dSEG and PPL.
  • Specific interneurons exhibit distinct response properties and projection patterns, indicating specialized roles in sensory processing.
  • The study provides a detailed map of neural circuits involved in vibration detection and processing in honeybees.