Home › Neuroscience › Studying the Neural Basis of Adaptive Locomotor Behavior in Insects
Neuroscience JoVE (Open Access) Citable · DOI

Studying the Neural Basis of Adaptive Locomotor Behavior in Insects

DOI: 10.3791/2629-v
What you'll learn
  • ✓ Record tarsal contact signals in tethered insects during locomotion
  • ✓ Synchronize motor activity recordings with electrical contact detection
  • ✓ Assess adaptive walking behavior on low-friction surfaces
  • ✓ Interpret neural control of insect leg coordination
Protocol

We describe a method to record motor activity, timed to the electrically recorded tarsal contact signal in a tethered insect, walking on a slippery surface. This is used to study the neural basis of adaptive behavior under reduced influence of mechanical interaction between legs through the substrate.

Difficulty
advanced
Total time
~2–4 hours per insect (including setup, preparation, and multi-trial recording)
Model organism
Insect (species not specified; typically cockroach or locust)

Steps

1
Introduce neural recording methods in insect locomotion

Overview of the experimental approach to study motor control in tethered insects walking on reduced-friction surfaces, emphasizing the role of tarsal sensory feedback.

▶ 01:05
2
Prepare experimental apparatus and electrodes

Assemble the tethered walking setup including the low-friction walking surface, electrode holders, and signal amplification equipment for concurrent motor and sensory recordings.

▶ 01:44
3
Restrain and mount insect for recording

Immobilize the insect using wax or adhesive, position it above the walking surface, and affix recording electrodes to detect tarsal contact and motor output.

▶ 02:55
4
Record electrical tarsal contact signals

Establish baseline electrode impedance, verify tarsal contact detection during leg movement, and optimize signal quality before motor activity acquisition.

▶ 04:44
5
Acquire synchronized motor activity recordings

Initiate simultaneous recording of motor neuron activity and tarsal contact events as the insect walks, ensuring temporal alignment of both signals.

▶ 06:54
6
Collect multiple locomotor behavior trials

Record sequential walking bouts across multiple trials to build a dataset of adaptive leg coordination patterns under conditions of minimal mechanical substrate feedback.

▶ 08:14
💬 Comments coming soon