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How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
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Related Experiment Video

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Combining Quantitative Food-intake Assays and Forcibly Activating Neurons to Study Appetite in Drosophila
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Neural energetics: hungry flies turn down the visual gain.

Jeremy E Niven1

  • 1School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK.

Current Biology : CB
|April 17, 2014
PubMed
Summary

Food-deprived flies show reduced neural activity in motion-sensing neurons during walking. This finding links hunger, behavior, and brain function in insects.

Area of Science:

  • Neuroscience
  • Animal Behavior
  • Physiology

Background:

  • Nutritional state significantly influences animal behavior and cognitive functions.
  • Visual-motion-sensitive neurons play a critical role in navigation and motor control.

Purpose of the Study:

  • To investigate the impact of food deprivation on neural activity in visual-motion-sensitive interneurons in flies.
  • To examine the relationship between nutritional status, walking behavior, and neural processing.

Main Methods:

  • Utilized electrophysiology to record neural activity in specific interneurons of walking flies.
  • Manipulated the nutritional state of the flies through food deprivation.

Main Results:

  • Food-deprived flies exhibited a reduced gain in visual-motion-sensitive interneurons compared to well-fed flies.

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  • The optomotor reflex, which relies on these interneurons, was also diminished in food-deprived flies.

    • Conclusions:

    • Nutritional state is coupled with motor behavior and neural activity in flies.
    • Hunger modulates sensory processing and motor output, impacting visual-guided behaviors.