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Related Experiment Video

Updated: Sep 17, 2025

Using Looming Visual Stimuli to Evaluate Mouse Vision

Using Looming Visual Stimuli to Evaluate Mouse Vision

Published on: June 13, 2019

Specialized parallel pathways for adaptive control of visual object pursuit.

Matthew F Collie¹, Chennan Jin², Emily Kellogg¹

¹Department of Neurobiology, Harvard Medical School, Boston, MA USA.

Biorxiv : the Preprint Server for Biology

|July 2, 2025

Summary

The Drosophila pursuit system uses two parallel feedback loops for adaptive control. A flexible pathway enhances steering precision during object movement away from the midline, fast running, and arousal.

Keywords:

AOTU019 AOTU025 DNa02 direction selectivity feedback control gain scheduling in vivo electrophysiology object motion steering

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Last Updated: Sep 17, 2025

Using Looming Visual Stimuli to Evaluate Mouse Vision

Using Looming Visual Stimuli to Evaluate Mouse Vision

Published on: June 13, 2019

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

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Published on: August 1, 2018

A Real-Time Interactive System for Studying Confrontational Pursuit Behavior in Rodents

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Published on: May 16, 2025

Area of Science:

Neuroscience
Systems Neuroscience
Animal Behavior

Background:

Visual pursuit requires continuous motor commands to keep objects centered.
Adaptive control, crucial for flexible gain in pursuit, remains mechanistically unclear.
The Drosophila pursuit system offers a model to investigate neural mechanisms of adaptive control.

Purpose of the Study:

To elucidate the neural mechanisms underlying adaptive control in the Drosophila visual pursuit system.
To identify the specific feedback loops involved in precise visual tracking.
To understand how gain flexibility contributes to robust pursuit behavior.

Main Methods:

Behavioral analysis of visual object pursuit in Drosophila.
Genetic manipulation to suppress specific neural pathways.
Investigation of parallel feedback loop contributions to steering.

Main Results:

The Drosophila pursuit system employs two parallel feedback loops for adaptive control.
A constant-gain pathway provides coarse steering towards the visual midline.
A flexible-gain pathway enhances steering precision, adapting to object motion, locomotion speed, and arousal states.
Genetic suppression of the flexible pathway impairs pursuit performance, particularly in aroused males.

Conclusions:

Adaptive control in visual pursuit is implemented through parallel feedback pathways with distinct properties.
A flexible feedback pathway is essential for precise error correction and robust pursuit under dynamic conditions.
These findings reveal how biological systems achieve adaptive control for vigorous error correction without instability.