Vision guides directed orienting movements during obstacle avoidance in mice.

Area of Science:

• Neuroscience
• Animal Behavior
• Vision Research

Background:

• Animals require effective obstacle avoidance for survival.
• Laboratory mice utilize vision for tasks like prey capture and escape.
• The role of vision versus touch in mouse obstacle avoidance is not well understood.

Purpose of the Study:

• To investigate how laboratory mice use vision for obstacle avoidance.
• To determine if vision guides paths around obstacles in freely moving mice.
• To compare visually guided vs. non-visually guided obstacle avoidance.

Main Methods:

• Developed a novel obstacle avoidance task for freely moving mice.
• Compared mouse trajectories in light versus complete darkness.
• Assessed obstacle avoidance using monocular vision (one eye).

Main Results:

• Mice use vision to steer around obstacles at distances beyond tactile reach.
• Vision enables more spatially efficient and directed paths towards obstacle openings.
• Mice initiate directed movements towards openings using visual cues, even with monocular vision.

Conclusions:

• Laboratory mice rely on vision for effective obstacle avoidance.
• Visually guided obstacle avoidance involves directed orienting movements.
• This paradigm can be used to study neural circuits of visually guided locomotion.