Journal
SENSORS
Volume 21, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/s21051651
Keywords
motion compensator; tracking; Drosophila melanogaster
Funding
- Kennesaw State University
- National Institute on Health (NIH)/National Institute on Aging (NIA) [1RO1AG059683-01]
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The study developed a Transparent Omnidirectional Locomotion Compensator (TOLC) that allows a fruit fly to navigate freely in infinite space without tethering, providing a new solution for fruit fly behavior research.
Animal behavior is an essential element in behavioral neuroscience study. However, most behavior studies in small animals such as fruit flies (Drosophila melanogaster) have been performed in a limited spatial chamber or by tethering the fly's body on a fixture, which restricts its natural behavior. In this paper, we developed the Transparent Omnidirectional Locomotion Compensator (TOLC) for a freely walking fruit fly without tethering, which enables its navigation in infinite space. The TOLC maintains a position of a fruit fly by compensating its motion using the transparent sphere. The TOLC is capable of maintaining the position error < 1 mm for 90.3% of the time and the heading error < 5 degrees for 80.2% of the time. The inverted imaging system with a transparent sphere secures the space for an additional experimental apparatus. Because the proposed TOLC allows us to observe a freely walking fly without physical tethering, there is no potential injury during the experiment. Thus, the TOLC will offer a unique opportunity to investigate longitudinal studies of a wide range of behavior in an unrestricted walking Drosophila.
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