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A Multi-regional Network Encoding Heading and Steering Maneuvers in Drosophila.
Hiroshi M Shiozaki1, Kazumi Ohta1, Hokto Kazama2
1RIKEN Center for Brain Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
Neuron
|February 6, 2020
Summary
Fruit flies use specific brain cell dynamics in the central complex (CX) to navigate and control turning. These neural circuits coordinate heading and turning behaviors, adapting to visual surroundings for effective flight.
Area of Science:
- Neuroscience
- Animal Behavior
- Computational Neuroscience
Background:
- Internal sense of direction is crucial for navigation.
- Neural encoding of heading and steering exists, but circuit organization is unclear.
Purpose of the Study:
- Investigate neural circuits encoding heading and turning in flying Drosophila.
- Understand how population dynamics of specific cell types contribute to navigation within the central complex (CX).
Main Methods:
- Studied population dynamics of specific cell types in the central complex (CX) of flying Drosophila.
- Examined columnar neurons in the fan-shaped body (FB) and ellipsoid body.
Main Results:
- Columnar neurons in the fan-shaped body (FB) exhibit circular dynamics encoding turning behavior and heading.
- These dynamics are coordinated with the ellipsoid body's heading representation.
- Fan-shaped body (FB) neurons show context-dependent changes in turn preference based on visual environment.
Conclusions:
- The navigational system in Drosophila spans multiple subregions of the central complex (CX).
- Specific cell types display coordinated, yet distinct, context-dependent dynamics for navigation.
- Population dynamics are key to encoding heading and turning behaviors in a complex environment.
